First R Code Lab
Emily Frey
2025-08-27
Reflection Questions
How was the install process? Anything I should know for future students?
It took me over an hour because my computer needed updates before I could download R. I recommend sending out an email to students before class to highly recommend that students update their computers before the first day of class.
Have you used statistical software before?
Nope! Not at all
Installing new pacakges
#install.packages("psych")
#install.packages("psychTools")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 fuctions on “bdi” variable
hist(epi.bfi$bdi)
mean(epi.bfi$bdi)## [1] 6.779221