This function returns a crosstab (tab) on a given data frame, and using simplified calls within the function for two variables, to return the observed and expected frequencies.
Value
This function returns the observed and expected frequencies of a bivariate relationship between var1 and var2 in data frame df.
Examples
data <- mtcars
tab(data,mpg,cyl)
#> $`Observed Frequencies`
#> cyl: 4 6 8 Total
#> mpg: 10.4 0 0 2 2
#> 13.3 0 0 1 1
#> 14.3 0 0 1 1
#> 14.7 0 0 1 1
#> 15 0 0 1 1
#> 15.2 0 0 2 2
#> 15.5 0 0 1 1
#> 15.8 0 0 1 1
#> 16.4 0 0 1 1
#> 17.3 0 0 1 1
#> 17.8 0 1 0 1
#> 18.1 0 1 0 1
#> 18.7 0 0 1 1
#> 19.2 0 1 1 2
#> 19.7 0 1 0 1
#> 21 0 2 0 2
#> 21.4 1 1 0 2
#> 21.5 1 0 0 1
#> 22.8 2 0 0 2
#> 24.4 1 0 0 1
#> 26 1 0 0 1
#> 27.3 1 0 0 1
#> 30.4 2 0 0 2
#> 32.4 1 0 0 1
#> 33.9 1 0 0 1
#> Total 11 7 14 32
#>
#> $`Expected Frequencies`
#> cyl: 4 6 8 Total
#> mpg: 10.4 0.68750 0.43750 0.8750 2
#> 13.3 0.34375 0.21875 0.4375 1
#> 14.3 0.34375 0.21875 0.4375 1
#> 14.7 0.34375 0.21875 0.4375 1
#> 15 0.34375 0.21875 0.4375 1
#> 15.2 0.68750 0.43750 0.8750 2
#> 15.5 0.34375 0.21875 0.4375 1
#> 15.8 0.34375 0.21875 0.4375 1
#> 16.4 0.34375 0.21875 0.4375 1
#> 17.3 0.34375 0.21875 0.4375 1
#> 17.8 0.34375 0.21875 0.4375 1
#> 18.1 0.34375 0.21875 0.4375 1
#> 18.7 0.34375 0.21875 0.4375 1
#> 19.2 0.68750 0.43750 0.8750 2
#> 19.7 0.34375 0.21875 0.4375 1
#> 21 0.68750 0.43750 0.8750 2
#> 21.4 0.68750 0.43750 0.8750 2
#> 21.5 0.34375 0.21875 0.4375 1
#> 22.8 0.68750 0.43750 0.8750 2
#> 24.4 0.34375 0.21875 0.4375 1
#> 26 0.34375 0.21875 0.4375 1
#> 27.3 0.34375 0.21875 0.4375 1
#> 30.4 0.68750 0.43750 0.8750 2
#> 32.4 0.34375 0.21875 0.4375 1
#> 33.9 0.34375 0.21875 0.4375 1
#> Total 11.00000 7.00000 14.0000 32
#>