library(dplyr)##
## Attaching package: 'dplyr'## The following objects are masked from 'package:stats':
##
## filter, lag## The following objects are masked from 'package:base':
##
## intersect, setdiff, setequal, unionlibrary(MASS)##
## Attaching package: 'MASS'## The following object is masked from 'package:dplyr':
##
## selectdata("survey")summary(survey)## Sex Wr.Hnd NW.Hnd W.Hnd Fold
## Female:118 Min. :13.00 Min. :12.50 Left : 18 L on R : 99
## Male :118 1st Qu.:17.50 1st Qu.:17.50 Right:218 Neither: 18
## NA's : 1 Median :18.50 Median :18.50 NA's : 1 R on L :120
## Mean :18.67 Mean :18.58
## 3rd Qu.:19.80 3rd Qu.:19.73
## Max. :23.20 Max. :23.50
## NA's :1 NA's :1
## Pulse Clap Exer Smoke Height
## Min. : 35.00 Left : 39 Freq:115 Heavy: 11 Min. :150.0
## 1st Qu.: 66.00 Neither: 50 None: 24 Never:189 1st Qu.:165.0
## Median : 72.50 Right :147 Some: 98 Occas: 19 Median :171.0
## Mean : 74.15 NA's : 1 Regul: 17 Mean :172.4
## 3rd Qu.: 80.00 NA's : 1 3rd Qu.:180.0
## Max. :104.00 Max. :200.0
## NA's :45 NA's :28
## M.I Age
## Imperial: 68 Min. :16.75
## Metric :141 1st Qu.:17.67
## NA's : 28 Median :18.58
## Mean :20.37
## 3rd Qu.:20.17
## Max. :73.00
## tail(survey,10)## Sex Wr.Hnd NW.Hnd W.Hnd Fold Pulse Clap Exer Smoke Height M.I
## 228 Male 20.0 19.8 Right L on R 68 Right Freq Never 185.00 Metric
## 229 Female 18.6 18.8 Right L on R 70 Right Freq Regul 167.00 Metric
## 230 Male 18.6 19.6 Right L on R 71 Right Freq Occas 185.00 Metric
## 231 Female 18.8 18.5 Right R on L 80 Right Some Never 169.00 Metric
## 232 Male 18.0 16.0 Right R on L NA Right Some Never 180.34 Imperial
## 233 Female 18.0 18.0 Right L on R 85 Right Some Never 165.10 Imperial
## 234 Female 18.5 18.0 Right L on R 88 Right Some Never 160.00 Metric
## 235 Female 17.5 16.5 Right R on L NA Right Some Never 170.00 Metric
## 236 Male 21.0 21.5 Right R on L 90 Right Some Never 183.00 Metric
## 237 Female 17.6 17.3 Right R on L 85 Right Freq Never 168.50 Metric
## Age
## 228 17.417
## 229 20.333
## 230 19.333
## 231 18.167
## 232 20.750
## 233 17.667
## 234 16.917
## 235 18.583
## 236 17.167
## 237 17.750head(survey,20)## Sex Wr.Hnd NW.Hnd W.Hnd Fold Pulse Clap Exer Smoke Height M.I
## 1 Female 18.5 18.0 Right R on L 92 Left Some Never 173.00 Metric
## 2 Male 19.5 20.5 Left R on L 104 Left None Regul 177.80 Imperial
## 3 Male 18.0 13.3 Right L on R 87 Neither None Occas NA <NA>
## 4 Male 18.8 18.9 Right R on L NA Neither None Never 160.00 Metric
## 5 Male 20.0 20.0 Right Neither 35 Right Some Never 165.00 Metric
## 6 Female 18.0 17.7 Right L on R 64 Right Some Never 172.72 Imperial
## 7 Male 17.7 17.7 Right L on R 83 Right Freq Never 182.88 Imperial
## 8 Female 17.0 17.3 Right R on L 74 Right Freq Never 157.00 Metric
## 9 Male 20.0 19.5 Right R on L 72 Right Some Never 175.00 Metric
## 10 Male 18.5 18.5 Right R on L 90 Right Some Never 167.00 Metric
## 11 Female 17.0 17.2 Right L on R 80 Right Freq Never 156.20 Imperial
## 12 Male 21.0 21.0 Right R on L 68 Left Freq Never NA <NA>
## 13 Female 16.0 16.0 Right L on R NA Right Some Never 155.00 Metric
## 14 Female 19.5 20.2 Right L on R 66 Neither Some Never 155.00 Metric
## 15 Male 16.0 15.5 Right R on L 60 Right Some Never NA <NA>
## 16 Female 17.5 17.0 Right R on L NA Right Freq Never 156.00 Metric
## 17 Female 18.0 18.0 Right L on R 89 Neither Freq Never 157.00 Metric
## 18 Male 19.4 19.2 Left R on L 74 Right Some Never 182.88 Imperial
## 19 Male 20.5 20.5 Right L on R NA Left Some Never 190.50 Imperial
## 20 Male 21.0 20.9 Right R on L 78 Right Freq Never 177.00 Metric
## Age
## 1 18.250
## 2 17.583
## 3 16.917
## 4 20.333
## 5 23.667
## 6 21.000
## 7 18.833
## 8 35.833
## 9 19.000
## 10 22.333
## 11 28.500
## 12 18.250
## 13 18.750
## 14 17.500
## 15 17.167
## 16 17.167
## 17 19.333
## 18 18.333
## 19 19.750
## 20 17.917count(survey)## n
## 1 237names(survey)## [1] "Sex" "Wr.Hnd" "NW.Hnd" "W.Hnd" "Fold" "Pulse" "Clap" "Exer"
## [9] "Smoke" "Height" "M.I" "Age"```