tadaa_one_sample: Tadaa, one-sample tests!

In tadaatoolbox: Helpers for Data Analysis and Presentation Focused on Undergrad Psychology

Description

If sigma is omitted, the function will just perform a one-sample stats::t.test, but if sigma is provided, a z-test is performed. It basically works the same way, except that we pretend we know the population sigma and use the normal distribution for comparison.

Usage

tadaa_one_sample(
  data = NULL,
  x,
  mu,
  sigma = NULL,
  direction = "two.sided",
  na.rm = FALSE,
  conf.level = 0.95,
  print = c("df", "console", "html", "markdown")
)

Arguments

data	A data.frame (optional).
x	A numeric vector or bare column name of data.
mu	The true mean (μ) to test for.
sigma	Population sigma. If supplied, a z-test is performed, otherwise a one-sample stats::t.test is performed.
direction	Test direction, like alternative in t.test.
na.rm	Whether to drop NA values. Default is FALSE.
conf.level	Confidence level used for power and CI, default is 0.95.
print	Print method, default df: A regular data.frame. Otherwise passed to pixiedust::sprinkle_print_method for fancyness.

Value

A data.frame by default, otherwise dust object, depending on print.

See Also

Other Tadaa-functions: tadaa_aov(), tadaa_chisq(), tadaa_kruskal(), tadaa_levene(), tadaa_nom(), tadaa_ord(), tadaa_pairwise_tukey(), tadaa_pairwise_t(), tadaa_t.test(), tadaa_wilcoxon()

Examples

set.seed(42)
df <- data.frame(x = rnorm(n = 20, mean = 100, sd = 1))

tadaa_one_sample(df, x, mu = 101, sigma = 1)

# No data.frame, just a vector
tadaa_one_sample(x = rnorm(20), mu = 0)

Example output

sh: 1: cannot create /dev/null: Permission denied
sh: 1: wc: Permission denied
Could not detect number of cores, defaulting to 1.
  estimate statistic        se      p.value conf.low conf.high method
1 100.1919 -3.613844 0.2236068 0.0003016912 70.61548  129.7684 z-Test
  alternative        d    power
1   two.sided -0.80808 0.950924
    estimate statistic   p.value parameter   conf.low conf.high
1 -0.2709918 -1.092153 0.2884214        19 -0.7903258 0.2483422
             method alternative        se          d     power
1 One Sample t-test   two.sided 0.2481262 -0.2442129 0.1795264

tadaatoolbox documentation built on July 2, 2020, 2:30 a.m.