First R Lab
Ananya Adur
2026-08-27
Reflection Questions
How was the R install process? I was nervous going into it but it was very easy and did not take very long.
How was the course folder organization process? It was relatively simple and the instructions were clear.
Installing new packages
# this is a note
#install.packages("psych")
#install.packages("psychTools")Calling packages
library(psych)
library(psychTools)Call in sample data “epi.bfi” from the psychTools package
data("epi.bfi")
summary(epi.bfi)## epiE epiS epiImp epilie
## Min. : 1.00 Min. : 0.000 Min. :0.000 Min. :0.000
## 1st Qu.:11.00 1st Qu.: 6.000 1st Qu.:3.000 1st Qu.:1.000
## Median :14.00 Median : 8.000 Median :4.000 Median :2.000
## Mean :13.33 Mean : 7.584 Mean :4.368 Mean :2.377
## 3rd Qu.:16.00 3rd Qu.: 9.500 3rd Qu.:6.000 3rd Qu.:3.000
## Max. :22.00 Max. :13.000 Max. :9.000 Max. :7.000
## epiNeur bfagree bfcon bfext
## Min. : 0.00 Min. : 74.0 Min. : 53.0 Min. : 8.0
## 1st Qu.: 7.00 1st Qu.:112.0 1st Qu.: 99.0 1st Qu.: 87.5
## Median :10.00 Median :126.0 Median :114.0 Median :104.0
## Mean :10.41 Mean :125.0 Mean :113.3 Mean :102.2
## 3rd Qu.:14.00 3rd Qu.:136.5 3rd Qu.:128.5 3rd Qu.:118.0
## Max. :23.00 Max. :167.0 Max. :178.0 Max. :168.0
## bfneur bfopen bdi traitanx
## Min. : 34.00 Min. : 73.0 Min. : 0.000 Min. :22.00
## 1st Qu.: 70.00 1st Qu.:110.0 1st Qu.: 3.000 1st Qu.:32.00
## Median : 90.00 Median :125.0 Median : 6.000 Median :38.00
## Mean : 87.97 Mean :123.4 Mean : 6.779 Mean :39.01
## 3rd Qu.:104.00 3rd Qu.:136.5 3rd Qu.: 9.000 3rd Qu.:44.00
## Max. :152.00 Max. :173.0 Max. :27.000 Max. :71.00
## stateanx
## Min. :21.00
## 1st Qu.:32.00
## Median :38.00
## Mean :39.85
## 3rd Qu.:46.50
## Max. :79.00Run the histogram and mean functions on “bdi” variable
hist(epi.bfi$bdi)
mean(epi.bfi$bdi)## [1] 6.779221