Tidy chi-squared test statistic

@description

chisq_stat(x, formula, response = NULL, explanatory = NULL, ...)

Arguments

x	A data frame that can be coerced into a tibble.
formula	A formula with the response variable on the left and the explanatory on the right.
response	The variable name in x that will serve as the response. This is alternative to using the formula argument.
explanatory	The variable name in x that will serve as the explanatory variable.
...	Additional arguments for chisq.test().

Details

A shortcut wrapper function to get the observed test statistic for a chisq test. Uses chisq.test(), which applies a continuity correction.

Examples

# chi-squared test statistic for test of independence 
# of college completion status depending and one's 
# self-identified income class
chisq_stat(gss, college ~ finrela)
#> X-squared 
#>  30.68252 

# chi-squared test statistic for a goodness of fit 
# test on whether self-identified income class 
# follows a uniform distribution
chisq_stat(gss, 
           response = finrela,
           p = c("far below average" = 1/6,
                 "below average" = 1/6,
                 "average" = 1/6,
                 "above average" = 1/6,
                 "far above average" = 1/6,
                 "DK" = 1/6))
#> X-squared 
#>   487.984