Ch. 4 | Exercise 1

Chapter 4 | Exercise 1

Compute the proportions of each level in the factor subj from the data set sent. Express them as percentages.

Key

First, load the package and the data:

> library(Rling)
> data(sent)

Create a frequency table (one of possible options):

> subjects <- table(sent$subj)
> subjects

 Abstr Animal    Hum MatObj 
     5      1     11      3

Compute the proportions:

> prop.table(subjects)
 Abstr Animal    Hum MatObj 
  0.25   0.05   0.55   0.15

Express the proportions as percentages:

> prop.table(subjects)*100

 Abstr Animal    Hum MatObj 
    25      5     55     15