ci_t2 | R Documentation |
Calculates the confidence interval for the difference of the mean between 2 samples (t distribution).
ci_t2(x1, s1, n1, x2, s2, n2, var.equal = FALSE, conf.level = 0.95, digits = 2)
x1 |
Sample's 1 mean |
s1 |
Sample's 1 standard deviation |
n1 |
Sample size of sample 1 |
x2 |
Sample's 2 mean |
s2 |
Sample's 2 standard deviation |
n2 |
Sample size of sample 2 |
var.equal |
Logical indicating if the variances are equal or not |
conf.level |
Confidence level to use for the confidence interval (Default is 0.95) |
digits |
Number of digits to round to (Default is 2) |
A tibble with the difference of means, degrees of freedom, and lower and upper ends of the confidence interval
x1 <- 90 s1 <- 15 n1 <- 20 x2 <- 80 s2 <- 8 n2 <- 30 ci_t2(x1, s1, n1, x2, s2, n2)
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