ttest_data | R Documentation |
Creates data for a t-test, for one mean, based on the test's properties.
ttest_data(
size = (3:20)^2,
mean = -5:5,
sd = seq(0.1, 1, by = 0.1),
reject = NA,
alternative = c("two.sided", "less", "greater"),
alpha = c(0.01, 0.05, 0.1),
z = seq(-4.49, 4.49, by = 0.01),
use.sigma = TRUE
)
dt1(
size = (3:20)^2,
mean = -5:5,
sd = seq(0.1, 1, by = 0.1),
reject = NA,
alternative = c("two.sided", "less", "greater"),
alpha = c(0.01, 0.05, 0.1),
z = seq(-4.49, 4.49, by = 0.01),
use.sigma = TRUE
)
size |
numeric: vector of possible sample sizes (default |
mean |
numeric: vector of possible means (default |
sd |
numeric: vector of possible standard deviations (default |
reject |
logical: should |
alternative |
character: a character string specifying the alternative hypothesis, must be one of |
alpha |
numeric: vector of significance levels (default |
z |
numeric: vector of possible |
use.sigma |
logical: should the standard deviation of the population (default) or the sample be used? |
A list with the components:
mu0
hypothetical mean
sigma
standard deviation in the population
sd
vector of possible standard deviations in the sample
xbar
mean in the sample
n
sample size
alpha
significance level
alternative
specifying the alternative hypothesis (either two.sided
, greater
or less
)
altsd
alternative values usable for sd
(if use.sigma==TRUE
) or sigma
(if use.sigma==FALSE
)
ttest_data()
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