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summary(cars)
##      speed           dist       
##  Min.   : 4.0   Min.   :  2.00  
##  1st Qu.:12.0   1st Qu.: 26.00  
##  Median :15.0   Median : 36.00  
##  Mean   :15.4   Mean   : 42.98  
##  3rd Qu.:19.0   3rd Qu.: 56.00  
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summary(iris)
##   Sepal.Length    Sepal.Width     Petal.Length    Petal.Width   
##  Min.   :4.300   Min.   :2.000   Min.   :1.000   Min.   :0.100  
##  1st Qu.:5.100   1st Qu.:2.800   1st Qu.:1.600   1st Qu.:0.300  
##  Median :5.800   Median :3.000   Median :4.350   Median :1.300  
##  Mean   :5.843   Mean   :3.057   Mean   :3.758   Mean   :1.199  
##  3rd Qu.:6.400   3rd Qu.:3.300   3rd Qu.:5.100   3rd Qu.:1.800  
##  Max.   :7.900   Max.   :4.400   Max.   :6.900   Max.   :2.500  
##        Species  
##  setosa    :50  
##  versicolor:50  
##  virginica :50  
##                 
##                 
## 
df1 <- subset(iris,Sepal.Length >5.843)
df2<-subset(iris,Sepal.Length <=5.843)
df3<-subset(iris,Species == "setosa")
plot(df3$Sepal.Length,df3$Petal.Length)

df4<-subset(iris,Species == "versicolor")
plot(df4$Sepal.Length,df4$Petal.Length)

df5<-subset(iris,Species == "virginica")
plot(df5$Sepal.Length,df5$Petal.Length)

plot(df3$Sepal.Width,df3$Petal.Width)

plot(df4$Sepal.Width,df4$Petal.Width)

plot(df5$Sepal.Width,df5$Petal.Width)

df.stacked=rbind(df3,df4)
df.stacked
##     Sepal.Length Sepal.Width Petal.Length Petal.Width    Species
## 1            5.1         3.5          1.4         0.2     setosa
## 2            4.9         3.0          1.4         0.2     setosa
## 3            4.7         3.2          1.3         0.2     setosa
## 4            4.6         3.1          1.5         0.2     setosa
## 5            5.0         3.6          1.4         0.2     setosa
## 6            5.4         3.9          1.7         0.4     setosa
## 7            4.6         3.4          1.4         0.3     setosa
## 8            5.0         3.4          1.5         0.2     setosa
## 9            4.4         2.9          1.4         0.2     setosa
## 10           4.9         3.1          1.5         0.1     setosa
## 11           5.4         3.7          1.5         0.2     setosa
## 12           4.8         3.4          1.6         0.2     setosa
## 13           4.8         3.0          1.4         0.1     setosa
## 14           4.3         3.0          1.1         0.1     setosa
## 15           5.8         4.0          1.2         0.2     setosa
## 16           5.7         4.4          1.5         0.4     setosa
## 17           5.4         3.9          1.3         0.4     setosa
## 18           5.1         3.5          1.4         0.3     setosa
## 19           5.7         3.8          1.7         0.3     setosa
## 20           5.1         3.8          1.5         0.3     setosa
## 21           5.4         3.4          1.7         0.2     setosa
## 22           5.1         3.7          1.5         0.4     setosa
## 23           4.6         3.6          1.0         0.2     setosa
## 24           5.1         3.3          1.7         0.5     setosa
## 25           4.8         3.4          1.9         0.2     setosa
## 26           5.0         3.0          1.6         0.2     setosa
## 27           5.0         3.4          1.6         0.4     setosa
## 28           5.2         3.5          1.5         0.2     setosa
## 29           5.2         3.4          1.4         0.2     setosa
## 30           4.7         3.2          1.6         0.2     setosa
## 31           4.8         3.1          1.6         0.2     setosa
## 32           5.4         3.4          1.5         0.4     setosa
## 33           5.2         4.1          1.5         0.1     setosa
## 34           5.5         4.2          1.4         0.2     setosa
## 35           4.9         3.1          1.5         0.2     setosa
## 36           5.0         3.2          1.2         0.2     setosa
## 37           5.5         3.5          1.3         0.2     setosa
## 38           4.9         3.6          1.4         0.1     setosa
## 39           4.4         3.0          1.3         0.2     setosa
## 40           5.1         3.4          1.5         0.2     setosa
## 41           5.0         3.5          1.3         0.3     setosa
## 42           4.5         2.3          1.3         0.3     setosa
## 43           4.4         3.2          1.3         0.2     setosa
## 44           5.0         3.5          1.6         0.6     setosa
## 45           5.1         3.8          1.9         0.4     setosa
## 46           4.8         3.0          1.4         0.3     setosa
## 47           5.1         3.8          1.6         0.2     setosa
## 48           4.6         3.2          1.4         0.2     setosa
## 49           5.3         3.7          1.5         0.2     setosa
## 50           5.0         3.3          1.4         0.2     setosa
## 51           7.0         3.2          4.7         1.4 versicolor
## 52           6.4         3.2          4.5         1.5 versicolor
## 53           6.9         3.1          4.9         1.5 versicolor
## 54           5.5         2.3          4.0         1.3 versicolor
## 55           6.5         2.8          4.6         1.5 versicolor
## 56           5.7         2.8          4.5         1.3 versicolor
## 57           6.3         3.3          4.7         1.6 versicolor
## 58           4.9         2.4          3.3         1.0 versicolor
## 59           6.6         2.9          4.6         1.3 versicolor
## 60           5.2         2.7          3.9         1.4 versicolor
## 61           5.0         2.0          3.5         1.0 versicolor
## 62           5.9         3.0          4.2         1.5 versicolor
## 63           6.0         2.2          4.0         1.0 versicolor
## 64           6.1         2.9          4.7         1.4 versicolor
## 65           5.6         2.9          3.6         1.3 versicolor
## 66           6.7         3.1          4.4         1.4 versicolor
## 67           5.6         3.0          4.5         1.5 versicolor
## 68           5.8         2.7          4.1         1.0 versicolor
## 69           6.2         2.2          4.5         1.5 versicolor
## 70           5.6         2.5          3.9         1.1 versicolor
## 71           5.9         3.2          4.8         1.8 versicolor
## 72           6.1         2.8          4.0         1.3 versicolor
## 73           6.3         2.5          4.9         1.5 versicolor
## 74           6.1         2.8          4.7         1.2 versicolor
## 75           6.4         2.9          4.3         1.3 versicolor
## 76           6.6         3.0          4.4         1.4 versicolor
## 77           6.8         2.8          4.8         1.4 versicolor
## 78           6.7         3.0          5.0         1.7 versicolor
## 79           6.0         2.9          4.5         1.5 versicolor
## 80           5.7         2.6          3.5         1.0 versicolor
## 81           5.5         2.4          3.8         1.1 versicolor
## 82           5.5         2.4          3.7         1.0 versicolor
## 83           5.8         2.7          3.9         1.2 versicolor
## 84           6.0         2.7          5.1         1.6 versicolor
## 85           5.4         3.0          4.5         1.5 versicolor
## 86           6.0         3.4          4.5         1.6 versicolor
## 87           6.7         3.1          4.7         1.5 versicolor
## 88           6.3         2.3          4.4         1.3 versicolor
## 89           5.6         3.0          4.1         1.3 versicolor
## 90           5.5         2.5          4.0         1.3 versicolor
## 91           5.5         2.6          4.4         1.2 versicolor
## 92           6.1         3.0          4.6         1.4 versicolor
## 93           5.8         2.6          4.0         1.2 versicolor
## 94           5.0         2.3          3.3         1.0 versicolor
## 95           5.6         2.7          4.2         1.3 versicolor
## 96           5.7         3.0          4.2         1.2 versicolor
## 97           5.7         2.9          4.2         1.3 versicolor
## 98           6.2         2.9          4.3         1.3 versicolor
## 99           5.1         2.5          3.0         1.1 versicolor
## 100          5.7         2.8          4.1         1.3 versicolor
df6=iris[,1:2]
df7=iris[,3:5]
df.bound=cbind(df6,df7)
df.bound
##     Sepal.Length Sepal.Width Petal.Length Petal.Width    Species
## 1            5.1         3.5          1.4         0.2     setosa
## 2            4.9         3.0          1.4         0.2     setosa
## 3            4.7         3.2          1.3         0.2     setosa
## 4            4.6         3.1          1.5         0.2     setosa
## 5            5.0         3.6          1.4         0.2     setosa
## 6            5.4         3.9          1.7         0.4     setosa
## 7            4.6         3.4          1.4         0.3     setosa
## 8            5.0         3.4          1.5         0.2     setosa
## 9            4.4         2.9          1.4         0.2     setosa
## 10           4.9         3.1          1.5         0.1     setosa
## 11           5.4         3.7          1.5         0.2     setosa
## 12           4.8         3.4          1.6         0.2     setosa
## 13           4.8         3.0          1.4         0.1     setosa
## 14           4.3         3.0          1.1         0.1     setosa
## 15           5.8         4.0          1.2         0.2     setosa
## 16           5.7         4.4          1.5         0.4     setosa
## 17           5.4         3.9          1.3         0.4     setosa
## 18           5.1         3.5          1.4         0.3     setosa
## 19           5.7         3.8          1.7         0.3     setosa
## 20           5.1         3.8          1.5         0.3     setosa
## 21           5.4         3.4          1.7         0.2     setosa
## 22           5.1         3.7          1.5         0.4     setosa
## 23           4.6         3.6          1.0         0.2     setosa
## 24           5.1         3.3          1.7         0.5     setosa
## 25           4.8         3.4          1.9         0.2     setosa
## 26           5.0         3.0          1.6         0.2     setosa
## 27           5.0         3.4          1.6         0.4     setosa
## 28           5.2         3.5          1.5         0.2     setosa
## 29           5.2         3.4          1.4         0.2     setosa
## 30           4.7         3.2          1.6         0.2     setosa
## 31           4.8         3.1          1.6         0.2     setosa
## 32           5.4         3.4          1.5         0.4     setosa
## 33           5.2         4.1          1.5         0.1     setosa
## 34           5.5         4.2          1.4         0.2     setosa
## 35           4.9         3.1          1.5         0.2     setosa
## 36           5.0         3.2          1.2         0.2     setosa
## 37           5.5         3.5          1.3         0.2     setosa
## 38           4.9         3.6          1.4         0.1     setosa
## 39           4.4         3.0          1.3         0.2     setosa
## 40           5.1         3.4          1.5         0.2     setosa
## 41           5.0         3.5          1.3         0.3     setosa
## 42           4.5         2.3          1.3         0.3     setosa
## 43           4.4         3.2          1.3         0.2     setosa
## 44           5.0         3.5          1.6         0.6     setosa
## 45           5.1         3.8          1.9         0.4     setosa
## 46           4.8         3.0          1.4         0.3     setosa
## 47           5.1         3.8          1.6         0.2     setosa
## 48           4.6         3.2          1.4         0.2     setosa
## 49           5.3         3.7          1.5         0.2     setosa
## 50           5.0         3.3          1.4         0.2     setosa
## 51           7.0         3.2          4.7         1.4 versicolor
## 52           6.4         3.2          4.5         1.5 versicolor
## 53           6.9         3.1          4.9         1.5 versicolor
## 54           5.5         2.3          4.0         1.3 versicolor
## 55           6.5         2.8          4.6         1.5 versicolor
## 56           5.7         2.8          4.5         1.3 versicolor
## 57           6.3         3.3          4.7         1.6 versicolor
## 58           4.9         2.4          3.3         1.0 versicolor
## 59           6.6         2.9          4.6         1.3 versicolor
## 60           5.2         2.7          3.9         1.4 versicolor
## 61           5.0         2.0          3.5         1.0 versicolor
## 62           5.9         3.0          4.2         1.5 versicolor
## 63           6.0         2.2          4.0         1.0 versicolor
## 64           6.1         2.9          4.7         1.4 versicolor
## 65           5.6         2.9          3.6         1.3 versicolor
## 66           6.7         3.1          4.4         1.4 versicolor
## 67           5.6         3.0          4.5         1.5 versicolor
## 68           5.8         2.7          4.1         1.0 versicolor
## 69           6.2         2.2          4.5         1.5 versicolor
## 70           5.6         2.5          3.9         1.1 versicolor
## 71           5.9         3.2          4.8         1.8 versicolor
## 72           6.1         2.8          4.0         1.3 versicolor
## 73           6.3         2.5          4.9         1.5 versicolor
## 74           6.1         2.8          4.7         1.2 versicolor
## 75           6.4         2.9          4.3         1.3 versicolor
## 76           6.6         3.0          4.4         1.4 versicolor
## 77           6.8         2.8          4.8         1.4 versicolor
## 78           6.7         3.0          5.0         1.7 versicolor
## 79           6.0         2.9          4.5         1.5 versicolor
## 80           5.7         2.6          3.5         1.0 versicolor
## 81           5.5         2.4          3.8         1.1 versicolor
## 82           5.5         2.4          3.7         1.0 versicolor
## 83           5.8         2.7          3.9         1.2 versicolor
## 84           6.0         2.7          5.1         1.6 versicolor
## 85           5.4         3.0          4.5         1.5 versicolor
## 86           6.0         3.4          4.5         1.6 versicolor
## 87           6.7         3.1          4.7         1.5 versicolor
## 88           6.3         2.3          4.4         1.3 versicolor
## 89           5.6         3.0          4.1         1.3 versicolor
## 90           5.5         2.5          4.0         1.3 versicolor
## 91           5.5         2.6          4.4         1.2 versicolor
## 92           6.1         3.0          4.6         1.4 versicolor
## 93           5.8         2.6          4.0         1.2 versicolor
## 94           5.0         2.3          3.3         1.0 versicolor
## 95           5.6         2.7          4.2         1.3 versicolor
## 96           5.7         3.0          4.2         1.2 versicolor
## 97           5.7         2.9          4.2         1.3 versicolor
## 98           6.2         2.9          4.3         1.3 versicolor
## 99           5.1         2.5          3.0         1.1 versicolor
## 100          5.7         2.8          4.1         1.3 versicolor
## 101          6.3         3.3          6.0         2.5  virginica
## 102          5.8         2.7          5.1         1.9  virginica
## 103          7.1         3.0          5.9         2.1  virginica
## 104          6.3         2.9          5.6         1.8  virginica
## 105          6.5         3.0          5.8         2.2  virginica
## 106          7.6         3.0          6.6         2.1  virginica
## 107          4.9         2.5          4.5         1.7  virginica
## 108          7.3         2.9          6.3         1.8  virginica
## 109          6.7         2.5          5.8         1.8  virginica
## 110          7.2         3.6          6.1         2.5  virginica
## 111          6.5         3.2          5.1         2.0  virginica
## 112          6.4         2.7          5.3         1.9  virginica
## 113          6.8         3.0          5.5         2.1  virginica
## 114          5.7         2.5          5.0         2.0  virginica
## 115          5.8         2.8          5.1         2.4  virginica
## 116          6.4         3.2          5.3         2.3  virginica
## 117          6.5         3.0          5.5         1.8  virginica
## 118          7.7         3.8          6.7         2.2  virginica
## 119          7.7         2.6          6.9         2.3  virginica
## 120          6.0         2.2          5.0         1.5  virginica
## 121          6.9         3.2          5.7         2.3  virginica
## 122          5.6         2.8          4.9         2.0  virginica
## 123          7.7         2.8          6.7         2.0  virginica
## 124          6.3         2.7          4.9         1.8  virginica
## 125          6.7         3.3          5.7         2.1  virginica
## 126          7.2         3.2          6.0         1.8  virginica
## 127          6.2         2.8          4.8         1.8  virginica
## 128          6.1         3.0          4.9         1.8  virginica
## 129          6.4         2.8          5.6         2.1  virginica
## 130          7.2         3.0          5.8         1.6  virginica
## 131          7.4         2.8          6.1         1.9  virginica
## 132          7.9         3.8          6.4         2.0  virginica
## 133          6.4         2.8          5.6         2.2  virginica
## 134          6.3         2.8          5.1         1.5  virginica
## 135          6.1         2.6          5.6         1.4  virginica
## 136          7.7         3.0          6.1         2.3  virginica
## 137          6.3         3.4          5.6         2.4  virginica
## 138          6.4         3.1          5.5         1.8  virginica
## 139          6.0         3.0          4.8         1.8  virginica
## 140          6.9         3.1          5.4         2.1  virginica
## 141          6.7         3.1          5.6         2.4  virginica
## 142          6.9         3.1          5.1         2.3  virginica
## 143          5.8         2.7          5.1         1.9  virginica
## 144          6.8         3.2          5.9         2.3  virginica
## 145          6.7         3.3          5.7         2.5  virginica
## 146          6.7         3.0          5.2         2.3  virginica
## 147          6.3         2.5          5.0         1.9  virginica
## 148          6.5         3.0          5.2         2.0  virginica
## 149          6.2         3.4          5.4         2.3  virginica
## 150          5.9         3.0          5.1         1.8  virginica
df8=iris[,c(1,2,3,5)]
df8
##     Sepal.Length Sepal.Width Petal.Length    Species
## 1            5.1         3.5          1.4     setosa
## 2            4.9         3.0          1.4     setosa
## 3            4.7         3.2          1.3     setosa
## 4            4.6         3.1          1.5     setosa
## 5            5.0         3.6          1.4     setosa
## 6            5.4         3.9          1.7     setosa
## 7            4.6         3.4          1.4     setosa
## 8            5.0         3.4          1.5     setosa
## 9            4.4         2.9          1.4     setosa
## 10           4.9         3.1          1.5     setosa
## 11           5.4         3.7          1.5     setosa
## 12           4.8         3.4          1.6     setosa
## 13           4.8         3.0          1.4     setosa
## 14           4.3         3.0          1.1     setosa
## 15           5.8         4.0          1.2     setosa
## 16           5.7         4.4          1.5     setosa
## 17           5.4         3.9          1.3     setosa
## 18           5.1         3.5          1.4     setosa
## 19           5.7         3.8          1.7     setosa
## 20           5.1         3.8          1.5     setosa
## 21           5.4         3.4          1.7     setosa
## 22           5.1         3.7          1.5     setosa
## 23           4.6         3.6          1.0     setosa
## 24           5.1         3.3          1.7     setosa
## 25           4.8         3.4          1.9     setosa
## 26           5.0         3.0          1.6     setosa
## 27           5.0         3.4          1.6     setosa
## 28           5.2         3.5          1.5     setosa
## 29           5.2         3.4          1.4     setosa
## 30           4.7         3.2          1.6     setosa
## 31           4.8         3.1          1.6     setosa
## 32           5.4         3.4          1.5     setosa
## 33           5.2         4.1          1.5     setosa
## 34           5.5         4.2          1.4     setosa
## 35           4.9         3.1          1.5     setosa
## 36           5.0         3.2          1.2     setosa
## 37           5.5         3.5          1.3     setosa
## 38           4.9         3.6          1.4     setosa
## 39           4.4         3.0          1.3     setosa
## 40           5.1         3.4          1.5     setosa
## 41           5.0         3.5          1.3     setosa
## 42           4.5         2.3          1.3     setosa
## 43           4.4         3.2          1.3     setosa
## 44           5.0         3.5          1.6     setosa
## 45           5.1         3.8          1.9     setosa
## 46           4.8         3.0          1.4     setosa
## 47           5.1         3.8          1.6     setosa
## 48           4.6         3.2          1.4     setosa
## 49           5.3         3.7          1.5     setosa
## 50           5.0         3.3          1.4     setosa
## 51           7.0         3.2          4.7 versicolor
## 52           6.4         3.2          4.5 versicolor
## 53           6.9         3.1          4.9 versicolor
## 54           5.5         2.3          4.0 versicolor
## 55           6.5         2.8          4.6 versicolor
## 56           5.7         2.8          4.5 versicolor
## 57           6.3         3.3          4.7 versicolor
## 58           4.9         2.4          3.3 versicolor
## 59           6.6         2.9          4.6 versicolor
## 60           5.2         2.7          3.9 versicolor
## 61           5.0         2.0          3.5 versicolor
## 62           5.9         3.0          4.2 versicolor
## 63           6.0         2.2          4.0 versicolor
## 64           6.1         2.9          4.7 versicolor
## 65           5.6         2.9          3.6 versicolor
## 66           6.7         3.1          4.4 versicolor
## 67           5.6         3.0          4.5 versicolor
## 68           5.8         2.7          4.1 versicolor
## 69           6.2         2.2          4.5 versicolor
## 70           5.6         2.5          3.9 versicolor
## 71           5.9         3.2          4.8 versicolor
## 72           6.1         2.8          4.0 versicolor
## 73           6.3         2.5          4.9 versicolor
## 74           6.1         2.8          4.7 versicolor
## 75           6.4         2.9          4.3 versicolor
## 76           6.6         3.0          4.4 versicolor
## 77           6.8         2.8          4.8 versicolor
## 78           6.7         3.0          5.0 versicolor
## 79           6.0         2.9          4.5 versicolor
## 80           5.7         2.6          3.5 versicolor
## 81           5.5         2.4          3.8 versicolor
## 82           5.5         2.4          3.7 versicolor
## 83           5.8         2.7          3.9 versicolor
## 84           6.0         2.7          5.1 versicolor
## 85           5.4         3.0          4.5 versicolor
## 86           6.0         3.4          4.5 versicolor
## 87           6.7         3.1          4.7 versicolor
## 88           6.3         2.3          4.4 versicolor
## 89           5.6         3.0          4.1 versicolor
## 90           5.5         2.5          4.0 versicolor
## 91           5.5         2.6          4.4 versicolor
## 92           6.1         3.0          4.6 versicolor
## 93           5.8         2.6          4.0 versicolor
## 94           5.0         2.3          3.3 versicolor
## 95           5.6         2.7          4.2 versicolor
## 96           5.7         3.0          4.2 versicolor
## 97           5.7         2.9          4.2 versicolor
## 98           6.2         2.9          4.3 versicolor
## 99           5.1         2.5          3.0 versicolor
## 100          5.7         2.8          4.1 versicolor
## 101          6.3         3.3          6.0  virginica
## 102          5.8         2.7          5.1  virginica
## 103          7.1         3.0          5.9  virginica
## 104          6.3         2.9          5.6  virginica
## 105          6.5         3.0          5.8  virginica
## 106          7.6         3.0          6.6  virginica
## 107          4.9         2.5          4.5  virginica
## 108          7.3         2.9          6.3  virginica
## 109          6.7         2.5          5.8  virginica
## 110          7.2         3.6          6.1  virginica
## 111          6.5         3.2          5.1  virginica
## 112          6.4         2.7          5.3  virginica
## 113          6.8         3.0          5.5  virginica
## 114          5.7         2.5          5.0  virginica
## 115          5.8         2.8          5.1  virginica
## 116          6.4         3.2          5.3  virginica
## 117          6.5         3.0          5.5  virginica
## 118          7.7         3.8          6.7  virginica
## 119          7.7         2.6          6.9  virginica
## 120          6.0         2.2          5.0  virginica
## 121          6.9         3.2          5.7  virginica
## 122          5.6         2.8          4.9  virginica
## 123          7.7         2.8          6.7  virginica
## 124          6.3         2.7          4.9  virginica
## 125          6.7         3.3          5.7  virginica
## 126          7.2         3.2          6.0  virginica
## 127          6.2         2.8          4.8  virginica
## 128          6.1         3.0          4.9  virginica
## 129          6.4         2.8          5.6  virginica
## 130          7.2         3.0          5.8  virginica
## 131          7.4         2.8          6.1  virginica
## 132          7.9         3.8          6.4  virginica
## 133          6.4         2.8          5.6  virginica
## 134          6.3         2.8          5.1  virginica
## 135          6.1         2.6          5.6  virginica
## 136          7.7         3.0          6.1  virginica
## 137          6.3         3.4          5.6  virginica
## 138          6.4         3.1          5.5  virginica
## 139          6.0         3.0          4.8  virginica
## 140          6.9         3.1          5.4  virginica
## 141          6.7         3.1          5.6  virginica
## 142          6.9         3.1          5.1  virginica
## 143          5.8         2.7          5.1  virginica
## 144          6.8         3.2          5.9  virginica
## 145          6.7         3.3          5.7  virginica
## 146          6.7         3.0          5.2  virginica
## 147          6.3         2.5          5.0  virginica
## 148          6.5         3.0          5.2  virginica
## 149          6.2         3.4          5.4  virginica
## 150          5.9         3.0          5.1  virginica
df9=iris[,c(2,3,4,5)]
df9
##     Sepal.Width Petal.Length Petal.Width    Species
## 1           3.5          1.4         0.2     setosa
## 2           3.0          1.4         0.2     setosa
## 3           3.2          1.3         0.2     setosa
## 4           3.1          1.5         0.2     setosa
## 5           3.6          1.4         0.2     setosa
## 6           3.9          1.7         0.4     setosa
## 7           3.4          1.4         0.3     setosa
## 8           3.4          1.5         0.2     setosa
## 9           2.9          1.4         0.2     setosa
## 10          3.1          1.5         0.1     setosa
## 11          3.7          1.5         0.2     setosa
## 12          3.4          1.6         0.2     setosa
## 13          3.0          1.4         0.1     setosa
## 14          3.0          1.1         0.1     setosa
## 15          4.0          1.2         0.2     setosa
## 16          4.4          1.5         0.4     setosa
## 17          3.9          1.3         0.4     setosa
## 18          3.5          1.4         0.3     setosa
## 19          3.8          1.7         0.3     setosa
## 20          3.8          1.5         0.3     setosa
## 21          3.4          1.7         0.2     setosa
## 22          3.7          1.5         0.4     setosa
## 23          3.6          1.0         0.2     setosa
## 24          3.3          1.7         0.5     setosa
## 25          3.4          1.9         0.2     setosa
## 26          3.0          1.6         0.2     setosa
## 27          3.4          1.6         0.4     setosa
## 28          3.5          1.5         0.2     setosa
## 29          3.4          1.4         0.2     setosa
## 30          3.2          1.6         0.2     setosa
## 31          3.1          1.6         0.2     setosa
## 32          3.4          1.5         0.4     setosa
## 33          4.1          1.5         0.1     setosa
## 34          4.2          1.4         0.2     setosa
## 35          3.1          1.5         0.2     setosa
## 36          3.2          1.2         0.2     setosa
## 37          3.5          1.3         0.2     setosa
## 38          3.6          1.4         0.1     setosa
## 39          3.0          1.3         0.2     setosa
## 40          3.4          1.5         0.2     setosa
## 41          3.5          1.3         0.3     setosa
## 42          2.3          1.3         0.3     setosa
## 43          3.2          1.3         0.2     setosa
## 44          3.5          1.6         0.6     setosa
## 45          3.8          1.9         0.4     setosa
## 46          3.0          1.4         0.3     setosa
## 47          3.8          1.6         0.2     setosa
## 48          3.2          1.4         0.2     setosa
## 49          3.7          1.5         0.2     setosa
## 50          3.3          1.4         0.2     setosa
## 51          3.2          4.7         1.4 versicolor
## 52          3.2          4.5         1.5 versicolor
## 53          3.1          4.9         1.5 versicolor
## 54          2.3          4.0         1.3 versicolor
## 55          2.8          4.6         1.5 versicolor
## 56          2.8          4.5         1.3 versicolor
## 57          3.3          4.7         1.6 versicolor
## 58          2.4          3.3         1.0 versicolor
## 59          2.9          4.6         1.3 versicolor
## 60          2.7          3.9         1.4 versicolor
## 61          2.0          3.5         1.0 versicolor
## 62          3.0          4.2         1.5 versicolor
## 63          2.2          4.0         1.0 versicolor
## 64          2.9          4.7         1.4 versicolor
## 65          2.9          3.6         1.3 versicolor
## 66          3.1          4.4         1.4 versicolor
## 67          3.0          4.5         1.5 versicolor
## 68          2.7          4.1         1.0 versicolor
## 69          2.2          4.5         1.5 versicolor
## 70          2.5          3.9         1.1 versicolor
## 71          3.2          4.8         1.8 versicolor
## 72          2.8          4.0         1.3 versicolor
## 73          2.5          4.9         1.5 versicolor
## 74          2.8          4.7         1.2 versicolor
## 75          2.9          4.3         1.3 versicolor
## 76          3.0          4.4         1.4 versicolor
## 77          2.8          4.8         1.4 versicolor
## 78          3.0          5.0         1.7 versicolor
## 79          2.9          4.5         1.5 versicolor
## 80          2.6          3.5         1.0 versicolor
## 81          2.4          3.8         1.1 versicolor
## 82          2.4          3.7         1.0 versicolor
## 83          2.7          3.9         1.2 versicolor
## 84          2.7          5.1         1.6 versicolor
## 85          3.0          4.5         1.5 versicolor
## 86          3.4          4.5         1.6 versicolor
## 87          3.1          4.7         1.5 versicolor
## 88          2.3          4.4         1.3 versicolor
## 89          3.0          4.1         1.3 versicolor
## 90          2.5          4.0         1.3 versicolor
## 91          2.6          4.4         1.2 versicolor
## 92          3.0          4.6         1.4 versicolor
## 93          2.6          4.0         1.2 versicolor
## 94          2.3          3.3         1.0 versicolor
## 95          2.7          4.2         1.3 versicolor
## 96          3.0          4.2         1.2 versicolor
## 97          2.9          4.2         1.3 versicolor
## 98          2.9          4.3         1.3 versicolor
## 99          2.5          3.0         1.1 versicolor
## 100         2.8          4.1         1.3 versicolor
## 101         3.3          6.0         2.5  virginica
## 102         2.7          5.1         1.9  virginica
## 103         3.0          5.9         2.1  virginica
## 104         2.9          5.6         1.8  virginica
## 105         3.0          5.8         2.2  virginica
## 106         3.0          6.6         2.1  virginica
## 107         2.5          4.5         1.7  virginica
## 108         2.9          6.3         1.8  virginica
## 109         2.5          5.8         1.8  virginica
## 110         3.6          6.1         2.5  virginica
## 111         3.2          5.1         2.0  virginica
## 112         2.7          5.3         1.9  virginica
## 113         3.0          5.5         2.1  virginica
## 114         2.5          5.0         2.0  virginica
## 115         2.8          5.1         2.4  virginica
## 116         3.2          5.3         2.3  virginica
## 117         3.0          5.5         1.8  virginica
## 118         3.8          6.7         2.2  virginica
## 119         2.6          6.9         2.3  virginica
## 120         2.2          5.0         1.5  virginica
## 121         3.2          5.7         2.3  virginica
## 122         2.8          4.9         2.0  virginica
## 123         2.8          6.7         2.0  virginica
## 124         2.7          4.9         1.8  virginica
## 125         3.3          5.7         2.1  virginica
## 126         3.2          6.0         1.8  virginica
## 127         2.8          4.8         1.8  virginica
## 128         3.0          4.9         1.8  virginica
## 129         2.8          5.6         2.1  virginica
## 130         3.0          5.8         1.6  virginica
## 131         2.8          6.1         1.9  virginica
## 132         3.8          6.4         2.0  virginica
## 133         2.8          5.6         2.2  virginica
## 134         2.8          5.1         1.5  virginica
## 135         2.6          5.6         1.4  virginica
## 136         3.0          6.1         2.3  virginica
## 137         3.4          5.6         2.4  virginica
## 138         3.1          5.5         1.8  virginica
## 139         3.0          4.8         1.8  virginica
## 140         3.1          5.4         2.1  virginica
## 141         3.1          5.6         2.4  virginica
## 142         3.1          5.1         2.3  virginica
## 143         2.7          5.1         1.9  virginica
## 144         3.2          5.9         2.3  virginica
## 145         3.3          5.7         2.5  virginica
## 146         3.0          5.2         2.3  virginica
## 147         2.5          5.0         1.9  virginica
## 148         3.0          5.2         2.0  virginica
## 149         3.4          5.4         2.3  virginica
## 150         3.0          5.1         1.8  virginica
merge(df8, df9)
##     Sepal.Width Petal.Length    Species Sepal.Length Petal.Width
## 1           2.0          3.5 versicolor          5.0         1.0
## 2           2.2          4.0 versicolor          6.0         1.0
## 3           2.2          4.5 versicolor          6.2         1.5
## 4           2.2          5.0  virginica          6.0         1.5
## 5           2.3          1.3     setosa          4.5         0.3
## 6           2.3          3.3 versicolor          5.0         1.0
## 7           2.3          4.0 versicolor          5.5         1.3
## 8           2.3          4.4 versicolor          6.3         1.3
## 9           2.4          3.3 versicolor          4.9         1.0
## 10          2.4          3.7 versicolor          5.5         1.0
## 11          2.4          3.8 versicolor          5.5         1.1
## 12          2.5          3.0 versicolor          5.1         1.1
## 13          2.5          3.9 versicolor          5.6         1.1
## 14          2.5          4.0 versicolor          5.5         1.3
## 15          2.5          4.5  virginica          4.9         1.7
## 16          2.5          4.9 versicolor          6.3         1.5
## 17          2.5          5.0  virginica          5.7         2.0
## 18          2.5          5.0  virginica          5.7         1.9
## 19          2.5          5.0  virginica          6.3         2.0
## 20          2.5          5.0  virginica          6.3         1.9
## 21          2.5          5.8  virginica          6.7         1.8
## 22          2.6          3.5 versicolor          5.7         1.0
## 23          2.6          4.0 versicolor          5.8         1.2
## 24          2.6          4.4 versicolor          5.5         1.2
## 25          2.6          5.6  virginica          6.1         1.4
## 26          2.6          6.9  virginica          7.7         2.3
## 27          2.7          3.9 versicolor          5.2         1.4
## 28          2.7          3.9 versicolor          5.2         1.2
## 29          2.7          3.9 versicolor          5.8         1.4
## 30          2.7          3.9 versicolor          5.8         1.2
## 31          2.7          4.1 versicolor          5.8         1.0
## 32          2.7          4.2 versicolor          5.6         1.3
## 33          2.7          4.9  virginica          6.3         1.8
## 34          2.7          5.1 versicolor          6.0         1.6
## 35          2.7          5.1  virginica          5.8         1.9
## 36          2.7          5.1  virginica          5.8         1.9
## 37          2.7          5.1  virginica          5.8         1.9
## 38          2.7          5.1  virginica          5.8         1.9
## 39          2.7          5.3  virginica          6.4         1.9
## 40          2.8          4.0 versicolor          6.1         1.3
## 41          2.8          4.1 versicolor          5.7         1.3
## 42          2.8          4.5 versicolor          5.7         1.3
## 43          2.8          4.6 versicolor          6.5         1.5
## 44          2.8          4.7 versicolor          6.1         1.2
## 45          2.8          4.8 versicolor          6.8         1.4
## 46          2.8          4.8  virginica          6.2         1.8
## 47          2.8          4.9  virginica          5.6         2.0
## 48          2.8          5.1  virginica          5.8         2.4
## 49          2.8          5.1  virginica          5.8         1.5
## 50          2.8          5.1  virginica          6.3         2.4
## 51          2.8          5.1  virginica          6.3         1.5
## 52          2.8          5.6  virginica          6.4         2.1
## 53          2.8          5.6  virginica          6.4         2.2
## 54          2.8          5.6  virginica          6.4         2.1
## 55          2.8          5.6  virginica          6.4         2.2
## 56          2.8          6.1  virginica          7.4         1.9
## 57          2.8          6.7  virginica          7.7         2.0
## 58          2.9          1.4     setosa          4.4         0.2
## 59          2.9          3.6 versicolor          5.6         1.3
## 60          2.9          4.2 versicolor          5.7         1.3
## 61          2.9          4.3 versicolor          6.2         1.3
## 62          2.9          4.3 versicolor          6.2         1.3
## 63          2.9          4.3 versicolor          6.4         1.3
## 64          2.9          4.3 versicolor          6.4         1.3
## 65          2.9          4.5 versicolor          6.0         1.5
## 66          2.9          4.6 versicolor          6.6         1.3
## 67          2.9          4.7 versicolor          6.1         1.4
## 68          2.9          5.6  virginica          6.3         1.8
## 69          2.9          6.3  virginica          7.3         1.8
## 70          3.0          1.1     setosa          4.3         0.1
## 71          3.0          1.3     setosa          4.4         0.2
## 72          3.0          1.4     setosa          4.9         0.2
## 73          3.0          1.4     setosa          4.9         0.3
## 74          3.0          1.4     setosa          4.9         0.1
## 75          3.0          1.4     setosa          4.8         0.2
## 76          3.0          1.4     setosa          4.8         0.3
## 77          3.0          1.4     setosa          4.8         0.1
## 78          3.0          1.4     setosa          4.8         0.2
## 79          3.0          1.4     setosa          4.8         0.3
## 80          3.0          1.4     setosa          4.8         0.1
## 81          3.0          1.6     setosa          5.0         0.2
## 82          3.0          4.1 versicolor          5.6         1.3
## 83          3.0          4.2 versicolor          5.7         1.2
## 84          3.0          4.2 versicolor          5.7         1.5
## 85          3.0          4.2 versicolor          5.9         1.2
## 86          3.0          4.2 versicolor          5.9         1.5
## 87          3.0          4.4 versicolor          6.6         1.4
## 88          3.0          4.5 versicolor          5.4         1.5
## 89          3.0          4.5 versicolor          5.4         1.5
## 90          3.0          4.5 versicolor          5.6         1.5
## 91          3.0          4.5 versicolor          5.6         1.5
## 92          3.0          4.6 versicolor          6.1         1.4
## 93          3.0          4.8  virginica          6.0         1.8
## 94          3.0          4.9  virginica          6.1         1.8
## 95          3.0          5.0 versicolor          6.7         1.7
## 96          3.0          5.1  virginica          5.9         1.8
## 97          3.0          5.2  virginica          6.7         2.3
## 98          3.0          5.2  virginica          6.7         2.0
## 99          3.0          5.2  virginica          6.5         2.3
## 100         3.0          5.2  virginica          6.5         2.0
## 101         3.0          5.5  virginica          6.5         1.8
## 102         3.0          5.5  virginica          6.5         2.1
## 103         3.0          5.5  virginica          6.8         1.8
## 104         3.0          5.5  virginica          6.8         2.1
## 105         3.0          5.8  virginica          7.2         1.6
## 106         3.0          5.8  virginica          7.2         2.2
## 107         3.0          5.8  virginica          6.5         1.6
## 108         3.0          5.8  virginica          6.5         2.2
## 109         3.0          5.9  virginica          7.1         2.1
## 110         3.0          6.1  virginica          7.7         2.3
## 111         3.0          6.6  virginica          7.6         2.1
## 112         3.1          1.5     setosa          4.9         0.1
## 113         3.1          1.5     setosa          4.9         0.2
## 114         3.1          1.5     setosa          4.9         0.2
## 115         3.1          1.5     setosa          4.9         0.1
## 116         3.1          1.5     setosa          4.9         0.2
## 117         3.1          1.5     setosa          4.9         0.2
## 118         3.1          1.5     setosa          4.6         0.1
## 119         3.1          1.5     setosa          4.6         0.2
## 120         3.1          1.5     setosa          4.6         0.2
## 121         3.1          1.6     setosa          4.8         0.2
## 122         3.1          4.4 versicolor          6.7         1.4
## 123         3.1          4.7 versicolor          6.7         1.5
## 124         3.1          4.9 versicolor          6.9         1.5
## 125         3.1          5.1  virginica          6.9         2.3
## 126         3.1          5.4  virginica          6.9         2.1
## 127         3.1          5.5  virginica          6.4         1.8
## 128         3.1          5.6  virginica          6.7         2.4
## 129         3.2          1.2     setosa          5.0         0.2
## 130         3.2          1.3     setosa          4.7         0.2
## 131         3.2          1.3     setosa          4.7         0.2
## 132         3.2          1.3     setosa          4.4         0.2
## 133         3.2          1.3     setosa          4.4         0.2
## 134         3.2          1.4     setosa          4.6         0.2
## 135         3.2          1.6     setosa          4.7         0.2
## 136         3.2          4.5 versicolor          6.4         1.5
## 137         3.2          4.7 versicolor          7.0         1.4
## 138         3.2          4.8 versicolor          5.9         1.8
## 139         3.2          5.1  virginica          6.5         2.0
## 140         3.2          5.3  virginica          6.4         2.3
## 141         3.2          5.7  virginica          6.9         2.3
## 142         3.2          5.9  virginica          6.8         2.3
## 143         3.2          6.0  virginica          7.2         1.8
## 144         3.3          1.4     setosa          5.0         0.2
## 145         3.3          1.7     setosa          5.1         0.5
## 146         3.3          4.7 versicolor          6.3         1.6
## 147         3.3          5.7  virginica          6.7         2.1
## 148         3.3          5.7  virginica          6.7         2.5
## 149         3.3          5.7  virginica          6.7         2.1
## 150         3.3          5.7  virginica          6.7         2.5
## 151         3.3          6.0  virginica          6.3         2.5
## 152         3.4          1.4     setosa          5.2         0.2
## 153         3.4          1.4     setosa          5.2         0.3
## 154         3.4          1.4     setosa          4.6         0.2
## 155         3.4          1.4     setosa          4.6         0.3
## 156         3.4          1.5     setosa          5.4         0.4
## 157         3.4          1.5     setosa          5.4         0.2
## 158         3.4          1.5     setosa          5.4         0.2
## 159         3.4          1.5     setosa          5.1         0.4
## 160         3.4          1.5     setosa          5.1         0.2
## 161         3.4          1.5     setosa          5.1         0.2
## 162         3.4          1.5     setosa          5.0         0.4
## 163         3.4          1.5     setosa          5.0         0.2
## 164         3.4          1.5     setosa          5.0         0.2
## 165         3.4          1.6     setosa          4.8         0.2
## 166         3.4          1.6     setosa          4.8         0.4
## 167         3.4          1.6     setosa          5.0         0.2
## 168         3.4          1.6     setosa          5.0         0.4
## 169         3.4          1.7     setosa          5.4         0.2
## 170         3.4          1.9     setosa          4.8         0.2
## 171         3.4          4.5 versicolor          6.0         1.6
## 172         3.4          5.4  virginica          6.2         2.3
## 173         3.4          5.6  virginica          6.3         2.4
## 174         3.5          1.3     setosa          5.5         0.2
## 175         3.5          1.3     setosa          5.5         0.3
## 176         3.5          1.3     setosa          5.0         0.2
## 177         3.5          1.3     setosa          5.0         0.3
## 178         3.5          1.4     setosa          5.1         0.2
## 179         3.5          1.4     setosa          5.1         0.3
## 180         3.5          1.4     setosa          5.1         0.2
## 181         3.5          1.4     setosa          5.1         0.3
## 182         3.5          1.5     setosa          5.2         0.2
## 183         3.5          1.6     setosa          5.0         0.6
## 184         3.6          1.0     setosa          4.6         0.2
## 185         3.6          1.4     setosa          4.9         0.1
## 186         3.6          1.4     setosa          4.9         0.2
## 187         3.6          1.4     setosa          5.0         0.1
## 188         3.6          1.4     setosa          5.0         0.2
## 189         3.6          6.1  virginica          7.2         2.5
## 190         3.7          1.5     setosa          5.4         0.2
## 191         3.7          1.5     setosa          5.4         0.2
## 192         3.7          1.5     setosa          5.4         0.4
## 193         3.7          1.5     setosa          5.3         0.2
## 194         3.7          1.5     setosa          5.3         0.2
## 195         3.7          1.5     setosa          5.3         0.4
## 196         3.7          1.5     setosa          5.1         0.2
## 197         3.7          1.5     setosa          5.1         0.2
## 198         3.7          1.5     setosa          5.1         0.4
## 199         3.8          1.5     setosa          5.1         0.3
## 200         3.8          1.6     setosa          5.1         0.2
## 201         3.8          1.7     setosa          5.7         0.3
## 202         3.8          1.9     setosa          5.1         0.4
## 203         3.8          6.4  virginica          7.9         2.0
## 204         3.8          6.7  virginica          7.7         2.2
## 205         3.9          1.3     setosa          5.4         0.4
## 206         3.9          1.7     setosa          5.4         0.4
## 207         4.0          1.2     setosa          5.8         0.2
## 208         4.1          1.5     setosa          5.2         0.1
## 209         4.2          1.4     setosa          5.5         0.2
## 210         4.4          1.5     setosa          5.7         0.4
?apply
## 打开httpd帮助服务器… 好了
df10=iris[,1:4]
a1=apply(df10,1,mean)
a1
##   [1] 2.550 2.375 2.350 2.350 2.550 2.850 2.425 2.525 2.225 2.400 2.700 2.500
##  [13] 2.325 2.125 2.800 3.000 2.750 2.575 2.875 2.675 2.675 2.675 2.350 2.650
##  [25] 2.575 2.450 2.600 2.600 2.550 2.425 2.425 2.675 2.725 2.825 2.425 2.400
##  [37] 2.625 2.500 2.225 2.550 2.525 2.100 2.275 2.675 2.800 2.375 2.675 2.350
##  [49] 2.675 2.475 4.075 3.900 4.100 3.275 3.850 3.575 3.975 2.900 3.850 3.300
##  [61] 2.875 3.650 3.300 3.775 3.350 3.900 3.650 3.400 3.600 3.275 3.925 3.550
##  [73] 3.800 3.700 3.725 3.850 3.950 4.100 3.725 3.200 3.200 3.150 3.400 3.850
##  [85] 3.600 3.875 4.000 3.575 3.500 3.325 3.425 3.775 3.400 2.900 3.450 3.525
##  [97] 3.525 3.675 2.925 3.475 4.525 3.875 4.525 4.150 4.375 4.825 3.400 4.575
## [109] 4.200 4.850 4.200 4.075 4.350 3.800 4.025 4.300 4.200 5.100 4.875 3.675
## [121] 4.525 3.825 4.800 3.925 4.450 4.550 3.900 3.950 4.225 4.400 4.550 5.025
## [133] 4.250 3.925 3.925 4.775 4.425 4.200 3.900 4.375 4.450 4.350 3.875 4.550
## [145] 4.550 4.300 3.925 4.175 4.325 3.950
a2=apply(df10,2,mean)
a2
## Sepal.Length  Sepal.Width Petal.Length  Petal.Width 
##     5.843333     3.057333     3.758000     1.199333
tapply(iris$Sepal.Length,iris$Species,sum)
##     setosa versicolor  virginica 
##      250.3      296.8      329.4
lapply(iris$Sepal.Length,mean)
## [[1]]
## [1] 5.1
## 
## [[2]]
## [1] 4.9
## 
## [[3]]
## [1] 4.7
## 
## [[4]]
## [1] 4.6
## 
## [[5]]
## [1] 5
## 
## [[6]]
## [1] 5.4
## 
## [[7]]
## [1] 4.6
## 
## [[8]]
## [1] 5
## 
## [[9]]
## [1] 4.4
## 
## [[10]]
## [1] 4.9
## 
## [[11]]
## [1] 5.4
## 
## [[12]]
## [1] 4.8
## 
## [[13]]
## [1] 4.8
## 
## [[14]]
## [1] 4.3
## 
## [[15]]
## [1] 5.8
## 
## [[16]]
## [1] 5.7
## 
## [[17]]
## [1] 5.4
## 
## [[18]]
## [1] 5.1
## 
## [[19]]
## [1] 5.7
## 
## [[20]]
## [1] 5.1
## 
## [[21]]
## [1] 5.4
## 
## [[22]]
## [1] 5.1
## 
## [[23]]
## [1] 4.6
## 
## [[24]]
## [1] 5.1
## 
## [[25]]
## [1] 4.8
## 
## [[26]]
## [1] 5
## 
## [[27]]
## [1] 5
## 
## [[28]]
## [1] 5.2
## 
## [[29]]
## [1] 5.2
## 
## [[30]]
## [1] 4.7
## 
## [[31]]
## [1] 4.8
## 
## [[32]]
## [1] 5.4
## 
## [[33]]
## [1] 5.2
## 
## [[34]]
## [1] 5.5
## 
## [[35]]
## [1] 4.9
## 
## [[36]]
## [1] 5
## 
## [[37]]
## [1] 5.5
## 
## [[38]]
## [1] 4.9
## 
## [[39]]
## [1] 4.4
## 
## [[40]]
## [1] 5.1
## 
## [[41]]
## [1] 5
## 
## [[42]]
## [1] 4.5
## 
## [[43]]
## [1] 4.4
## 
## [[44]]
## [1] 5
## 
## [[45]]
## [1] 5.1
## 
## [[46]]
## [1] 4.8
## 
## [[47]]
## [1] 5.1
## 
## [[48]]
## [1] 4.6
## 
## [[49]]
## [1] 5.3
## 
## [[50]]
## [1] 5
## 
## [[51]]
## [1] 7
## 
## [[52]]
## [1] 6.4
## 
## [[53]]
## [1] 6.9
## 
## [[54]]
## [1] 5.5
## 
## [[55]]
## [1] 6.5
## 
## [[56]]
## [1] 5.7
## 
## [[57]]
## [1] 6.3
## 
## [[58]]
## [1] 4.9
## 
## [[59]]
## [1] 6.6
## 
## [[60]]
## [1] 5.2
## 
## [[61]]
## [1] 5
## 
## [[62]]
## [1] 5.9
## 
## [[63]]
## [1] 6
## 
## [[64]]
## [1] 6.1
## 
## [[65]]
## [1] 5.6
## 
## [[66]]
## [1] 6.7
## 
## [[67]]
## [1] 5.6
## 
## [[68]]
## [1] 5.8
## 
## [[69]]
## [1] 6.2
## 
## [[70]]
## [1] 5.6
## 
## [[71]]
## [1] 5.9
## 
## [[72]]
## [1] 6.1
## 
## [[73]]
## [1] 6.3
## 
## [[74]]
## [1] 6.1
## 
## [[75]]
## [1] 6.4
## 
## [[76]]
## [1] 6.6
## 
## [[77]]
## [1] 6.8
## 
## [[78]]
## [1] 6.7
## 
## [[79]]
## [1] 6
## 
## [[80]]
## [1] 5.7
## 
## [[81]]
## [1] 5.5
## 
## [[82]]
## [1] 5.5
## 
## [[83]]
## [1] 5.8
## 
## [[84]]
## [1] 6
## 
## [[85]]
## [1] 5.4
## 
## [[86]]
## [1] 6
## 
## [[87]]
## [1] 6.7
## 
## [[88]]
## [1] 6.3
## 
## [[89]]
## [1] 5.6
## 
## [[90]]
## [1] 5.5
## 
## [[91]]
## [1] 5.5
## 
## [[92]]
## [1] 6.1
## 
## [[93]]
## [1] 5.8
## 
## [[94]]
## [1] 5
## 
## [[95]]
## [1] 5.6
## 
## [[96]]
## [1] 5.7
## 
## [[97]]
## [1] 5.7
## 
## [[98]]
## [1] 6.2
## 
## [[99]]
## [1] 5.1
## 
## [[100]]
## [1] 5.7
## 
## [[101]]
## [1] 6.3
## 
## [[102]]
## [1] 5.8
## 
## [[103]]
## [1] 7.1
## 
## [[104]]
## [1] 6.3
## 
## [[105]]
## [1] 6.5
## 
## [[106]]
## [1] 7.6
## 
## [[107]]
## [1] 4.9
## 
## [[108]]
## [1] 7.3
## 
## [[109]]
## [1] 6.7
## 
## [[110]]
## [1] 7.2
## 
## [[111]]
## [1] 6.5
## 
## [[112]]
## [1] 6.4
## 
## [[113]]
## [1] 6.8
## 
## [[114]]
## [1] 5.7
## 
## [[115]]
## [1] 5.8
## 
## [[116]]
## [1] 6.4
## 
## [[117]]
## [1] 6.5
## 
## [[118]]
## [1] 7.7
## 
## [[119]]
## [1] 7.7
## 
## [[120]]
## [1] 6
## 
## [[121]]
## [1] 6.9
## 
## [[122]]
## [1] 5.6
## 
## [[123]]
## [1] 7.7
## 
## [[124]]
## [1] 6.3
## 
## [[125]]
## [1] 6.7
## 
## [[126]]
## [1] 7.2
## 
## [[127]]
## [1] 6.2
## 
## [[128]]
## [1] 6.1
## 
## [[129]]
## [1] 6.4
## 
## [[130]]
## [1] 7.2
## 
## [[131]]
## [1] 7.4
## 
## [[132]]
## [1] 7.9
## 
## [[133]]
## [1] 6.4
## 
## [[134]]
## [1] 6.3
## 
## [[135]]
## [1] 6.1
## 
## [[136]]
## [1] 7.7
## 
## [[137]]
## [1] 6.3
## 
## [[138]]
## [1] 6.4
## 
## [[139]]
## [1] 6
## 
## [[140]]
## [1] 6.9
## 
## [[141]]
## [1] 6.7
## 
## [[142]]
## [1] 6.9
## 
## [[143]]
## [1] 5.8
## 
## [[144]]
## [1] 6.8
## 
## [[145]]
## [1] 6.7
## 
## [[146]]
## [1] 6.7
## 
## [[147]]
## [1] 6.3
## 
## [[148]]
## [1] 6.5
## 
## [[149]]
## [1] 6.2
## 
## [[150]]
## [1] 5.9
aggregate(Sepal.Length~Species,summary,data=iris)
##      Species Sepal.Length.Min. Sepal.Length.1st Qu. Sepal.Length.Median
## 1     setosa             4.300                4.800               5.000
## 2 versicolor             4.900                5.600               5.900
## 3  virginica             4.900                6.225               6.500
##   Sepal.Length.Mean Sepal.Length.3rd Qu. Sepal.Length.Max.
## 1             5.006                5.200             5.800
## 2             5.936                6.300             7.000
## 3             6.588                6.900             7.900

housing.df <- mlba::WestRoxbury housing.df boxplot(housing.df\(TOTAL.VALUE,xlab="TOTAL.VALUE") boxplot(housing.df\)TOTAL.VALUE~housing.df\(REMODEL,xlab="REMODEL",ylab="TOTAL.VALUE") boxplot(housing.df\)LOT.SQFT,xlab=“LOT.SQFT”) boxplot(housing.df\(LIVING.AREA,xlab="LIVING.AREA") hist(housing.df\)TOTAL.VALUE, xlab=“TOTAL.VALUE”) hist(housing.df\(LOT.SQFT, xlab="LOT.SQFT") hist(housing.df\)GROSS.AREA, xlab=“GROSS.AREA”) hist(housing.df\(LIVING.AREA, xlab="LIVING.AREA") plot(housing.df\)TOTAL.VALUE ~ housing.df\(LOT.SQFT, xlab="LOT.SQFT", ylab="TOTAL.VALUE") plot(housing.df\)TOTAL.VALUE ~ housing.df\(GROSS.AREA, xlab="GROSS.AREA", ylab="TOTAL.VALUE") plot(housing.df\)TOTAL.VALUE ~ housing.df\(LIVING.AREA, xlab="LIVING.AREA", ylab="TOTAL.VALUE") plot(housing.df\)TOTAL.VALUE ~ housing.df\(ROOMS, xlab="ROOMS", ylab="TOTAL.VALUE") barplot(housing.df\)TOTAL.VALUE, names.arg=housing.df$REMODEL, xlab=“REMODEL”, ylab=“Avg.TOTAL.VALUE”)