Test whether the observed proportions for a categorical variable differ from hypothesized proportions
chisq_gof(x, y, correct = FALSE)
chisq_gof
returns an object of class "chisq_gof"
.
An object of class "chisq_gof"
is a list containing the
following components:
Sheskin, D. J. 2007. Handbook of Parametric and Nonparametric Statistical Procedures, 4th edition. : Chapman & Hall/CRC.
chisq_gof(as.factor(hsb$race), c(20, 20, 20, 140))#> Test Statistics #> ----------------------- #> Chi-Square 5.0286 #> DF 3 #> Pr > Chi Sq 0.1697 #> Sample Size 200 #> #> Variable: race) #> ----------------------------------------------------------------- #> Category Observed Expected % Deviation Std. Residuals #> ----------------------------------------------------------------- #> 1 24 20 20.00 0.89 #> 2 11 20 -45.00 -2.01 #> 3 20 20 0.00 0.00 #> 4 145 140 3.57 0.42 #> -----------------------------------------------------------------# apply continuity correction chisq_gof(as.factor(hsb$race), c(20, 20, 20, 140), correct = TRUE)#> Test Statistics #> ----------------------- #> Chi-Square 4.3821 #> DF 3 #> Pr > Chi Sq 0.2231 #> Sample Size 200 #> #> Variable: race) #> ----------------------------------------------------------------- #> Category Observed Expected % Deviation Std. Residuals #> ----------------------------------------------------------------- #> 1 24 20 17.50 0.78 #> 2 11 20 -47.50 -2.12 #> 3 20 20 -2.50 -0.11 #> 4 145 140 3.21 0.38 #> -----------------------------------------------------------------