A tidier version of chisq.test() for goodness of fit tests and tests of independence.
chisq_test(x, formula, response = NULL, explanatory = NULL, ...)
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 |
explanatory | The variable name in |
... | Additional arguments for chisq.test(). |
Other wrapper functions:
chisq_stat()
,
observe()
,
prop_test()
,
t_stat()
,
t_test()
# 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 × 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 × 3
#> statistic chisq_df p_value
#> <dbl> <dbl> <dbl>
#> 1 488. 5 3.13e-103