Tests on the equality of proportions using large-sample statistics. It tests that a sample has the same proportion within two independent groups or two samples have the same proportion.
ts_prop_test(var1, var2, alternative = c("both", "less", "greater", "all"), ...) ts_prop_grp(var, group, alternative = c("both", "less", "greater", "all")) ts_prop_calc(n1, n2, p1, p2, alternative = c("both", "less", "greater", "all"), ...)
an object of class "prop_test"
.
An object of class "prop_test"
is a list containing the
following components:
Sheskin, D. J. 2007. Handbook of Parametric and Nonparametric Statistical Procedures, 4th edition. : Chapman & Hall/CRC.
# using variables # lower tail ts_prop_test(var1 = treatment$treatment1, var2 = treatment$treatment2, alternative = 'less')#> Test Statistics #> ------------------------ #> Sample Size 50 #> z 0.403 #> Pr(Z < z) 0.656 #># upper tail ts_prop_test(var1 = treatment$treatment1, var2 = treatment$treatment2, alternative = 'greater')#> Test Statistics #> ------------------------ #> Sample Size 50 #> z 0.403 #> Pr(Z > z) 0.344 #># both tails ts_prop_test(var1 = treatment$treatment1, var2 = treatment$treatment2, alternative = 'both')#> Test Statistics #> ------------------------ #> Sample Size 50 #> z 0.403 #> Pr(|Z| > |z|) 0.687 #># all tails ts_prop_test(var1 = treatment$treatment1, var2 = treatment$treatment2, alternative = 'all')#> Test Statistics #> ------------------------ #> Sample Size 50 #> z 0.403 #> Pr(|Z| > |z|) 0.687 #> Pr(Z < z) 0.656 #> Pr(Z > z) 0.344 #># using groups # lower tail ts_prop_grp(var = treatment2$outcome, group = treatment2$female, alternative = 'less')#> Test Statistics #> ------------------------ #> Sample Size 91 #> z 0.351 #> Pr(Z < z) 0.637 #># upper tail ts_prop_grp(var = treatment2$outcome, group = treatment2$female, alternative = 'greater')#> Test Statistics #> ------------------------ #> Sample Size 91 #> z 0.351 #> Pr(Z > z) 0.363 #># both tails ts_prop_grp(var = treatment2$outcome, group = treatment2$female, alternative = 'both')#> Test Statistics #> ------------------------ #> Sample Size 91 #> z 0.351 #> Pr(|Z| > |z|) 0.726 #># # all tails ts_prop_grp(var = treatment2$outcome, group = treatment2$female, alternative = 'all')#> Test Statistics #> ------------------------ #> Sample Size 91 #> z 0.351 #> Pr(|Z| > |z|) 0.726 #> Pr(Z < z) 0.637 #> Pr(Z > z) 0.363 #># using sample size and proportions # lower tail ts_prop_calc(n1 = 30, n2 = 25, p1 = 0.3, p2 = 0.5, alternative = 'less')#> Test Statistics #> ------------------------- #> Sample Size 30 #> z -1.514 #> Pr(Z < z) 0.065 #># upper tail ts_prop_calc(n1 = 30, n2 = 25, p1 = 0.3, p2 = 0.5, alternative = 'greater')#> Test Statistics #> ------------------------- #> Sample Size 30 #> z -1.514 #> Pr(Z > z) 0.935 #># both tails ts_prop_calc(n1 = 30, n2 = 25, p1 = 0.3, p2 = 0.5, alternative = 'both')#> Test Statistics #> ------------------------- #> Sample Size 30 #> z -1.514 #> Pr(|Z| > |z|) 0.13 #># all tails ts_prop_calc(n1 = 30, n2 = 25, p1 = 0.3, p2 = 0.5, alternative = 'all')#> Test Statistics #> ------------------------- #> Sample Size 30 #> z -1.514 #> Pr(|Z| > |z|) 0.13 #> Pr(Z < z) 0.065 #> Pr(Z > z) 0.935 #>