Tidy chi-squared test

A tidier version of chisq.test() for goodness of fit tests and tests of independence.

chisq_test(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().

Examples

# chi-squared test of independence for college completion 
# status depending on one's self-identified income class
chisq_test(gss, college ~ finrela)
#> Warning: Chi-squared approximation may be incorrect
#> # A tibble: 1 x 3
#>   statistic chisq_df   p_value
#>       <dbl>    <int>     <dbl>
#> 1      30.7        5 0.0000108

# chi-squared goodness of fit test on whether self-identified 
# income class follows a uniform distribution
chisq_test(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))
#> # A tibble: 1 x 3
#>   statistic chisq_df   p_value
#>       <dbl>    <dbl>     <dbl>
#> 1      488.        5 3.13e-103