informe

data(iris)
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  
##                 
##                 
## 

Intepretaciones de los datos

Se observa que la variable Sepal.Length tiene un valor promedio de 5.843.

hist(iris$Sepal.Length, col="red")

hist(iris$Sepal.Width, col="blue")

hist(iris$Petal.Length, col="green")

hist(iris$Petal.Width, col="skyblue")

Diagrama de cajas

En la siguiente Figura se observa que encontramos datos atípicos en las variables Sepal.Width.

par(mfrow=c(2,2))
boxplot(iris$Sepal.Length, col="red", main="Sepal.Length")
boxplot(iris$Sepal.Width, col="skyblue" , main="Sepal.Width")
boxplot(iris$Petal.Length, col="blue", main="Petal.Length")
boxplot(iris$Petal.Width, col="green", main="Petal.Width")

Correlación

Diagrama de Dispersión

Se observa que en la matriz de correlacion las variables más correlacionadas son Petal.Length y Petal.Width, con una correlación \(r=0.96\).

r=cor(iris[,-5])
r

##              Sepal.Length Sepal.Width Petal.Length Petal.Width
## Sepal.Length    1.0000000  -0.1175698    0.8717538   0.8179411
## Sepal.Width    -0.1175698   1.0000000   -0.4284401  -0.3661259
## Petal.Length    0.8717538  -0.4284401    1.0000000   0.9628654
## Petal.Width     0.8179411  -0.3661259    0.9628654   1.0000000

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##  Min.   : 4.0   Min.   :  2.00  
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##  Mean   :15.4   Mean   : 42.98  
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