games_howell.test {WAnova} | R Documentation |
Games-Howell post hoc test for multiple comparisons after Welch's ANOVA.
games_howell.test(levels, n, means, sd, conf.level = 0.95)
levels |
A vector containing the level names of the independent variable. |
n |
A vector containing the sample sizes for each level. |
means |
A vector containing the sample means for each level. |
sd |
A vector containing the sample standard deviations for each level. |
conf.level |
The confidence level for the interval. Defaults to 0.95. |
A data frame of class "wAnova_gh" containing the pairwise comparisons with mean differences, standard errors, confidence intervals, t-values, degrees of freedom, and p-values. Significance codes are also included.
probe_data <- data.frame(
group = c("probe_a", "probe_b", "probe_c"),
size = c(10, 9, 8),
mean = c(43.00000, 33.44444, 35.75000),
sd = c(4.027682, 9.302031, 16.298554)
)
result <- games_howell.test(probe_data$group, probe_data$size, probe_data$mean, probe_data$sd)
print(result)