Reflection Questions

How was the install process? Anything I should know for future students? The install process was smooth for me, but I also own a windows computer so one drive is already on my computer and things like this just run better on my computer. It’s also easier to follow along since your computer is similar reflection wise.

Have you used any statistical software before? I took a programming class last year so this looks a bit familiar, however I had a hard time understanding what was going on about halfway through and just tried to get by. By then I had stopped retaining information.

Installing new packages

#install.packages("psych")
#install.packages("psychTools")

#Hashtag makes it just a comment

Calling packages to use in file

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.   :79.00

Run the histogram and mean

hist(epi.bfi$bdi)

mean(epi.bfi$bdi)
## [1] 6.779221