Perceived math ability for 13-year olds by gender

Data used in Exercise 8.57

Ability

Format

A data frame with 400 observations on the following 2 variables.

Gender

a factor with levels boy and girl

Skill

a factor with levels aboveavg, average, belowavg, hopeless, and superior

Source

Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Duxbury

Examples

T1 <- xtabs(~Gender + Skill, data = Ability)
T1
#>       Skill
#> Gender aboveavg average belowavg hopeless superior
#>   boy        42      61       43       35       19
#>   girl       21      54       61       56        8
chisq.test(T1)
#> 
#> 	Pearson's Chi-squared test
#> 
#> data:  T1
#> X-squared = 19.869, df = 4, p-value = 0.00053
#>