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## Run the following starter code first. This will load the relevant datasets and libraries. install.packages("car")...

## Run the following starter code first. This will load the relevant datasets and libraries.

install.packages("car")

install.packages("reshape2")

library(car); library(reshape2)

data(Salaries)

library(ggplot2); library(lm.beta)

Question A

  1. How many observations does the dataset salaries contain? __________

QUESTION B

  1. What is the class of the variable, "sex"?

    Integer

    Numeric

    Character

    Factor
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Homework Answers

Answer #1

A) 397

B) d) Factor

Explanation:

df <- Salaries
nrow(df) # finds number of observations
class(df$sex) # tells class of variable


/*Output */

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