Smoking habits of boys and girls ages 12 to 18

Data for Exercise 4.85

Kidsmoke

Format

A data frame/tibble with 1000 observations on two variables

gender

character vector with values female and male

smoke

a character vector with values no and yes

References

Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.

Examples

T1 <- xtabs(~smoke + gender, data = Kidsmoke)
T1
#>      gender
#> smoke female male
#>   no     375  418
#>   yes    105  102
prop.table(T1)
#>      gender
#> smoke female  male
#>   no   0.375 0.418
#>   yes  0.105 0.102
prop.table(T1, 1)
#>      gender
#> smoke    female      male
#>   no  0.4728878 0.5271122
#>   yes 0.5072464 0.4927536
prop.table(T1, 2)
#>      gender
#> smoke    female      male
#>   no  0.7812500 0.8038462
#>   yes 0.2187500 0.1961538