ggstatsplot (version 0.0.11)

bf_two_sample_ttest: Bayesian two-samples t-test.

Description

Bayesian two-samples t-test.

Usage

bf_two_sample_ttest(data, x, y, paired = FALSE, bf.prior = 0.707,
  caption = NULL, output = "null", k = 2, ...)

Arguments

data

for use with formula, a data frame containing all the data

x

a vector of observations for the first (or only) group

y

a vector of observations for the second group (or condition, for paired)

paired

if TRUE, observations are paired

bf.prior

A number between 0.5 and 2 (default 0.707), the prior width to use in calculating Bayes factors.

caption

The text for the plot caption.

output

Can either be "null" (or "caption" or "H0", which will contain text for evidence in favor of the null hypothesis or H0) or "alternative" (or "title" or "H1") or "results", which will return a dataframe with results all the details).

k

Number of digits after decimal point (should be an integer) (Default: k = 2).

...

further arguments to be passed to or from methods.

See Also

bf_contingency_tab, bf_corr_test, bf_oneway_anova

Examples

# NOT RUN {
# for reproducibility
set.seed(123)

# to get caption (default)
bf_two_sample_ttest(
  data = mtcars,
  x = am,
  y = wt,
  paired = FALSE,
  bf.prior = 0.880
)

# to see results
bf_two_sample_ttest(
  data = mtcars,
  x = am,
  y = wt,
  paired = FALSE,
  output = "results"
)

# for paired sample test
bf_two_sample_ttest(
  data = dplyr::filter(
    ggstatsplot::intent_morality,
    condition %in% c("accidental", "attempted"),
    harm == "Poisoning"
  ),
  x = condition,
  y = rating,
  paired = TRUE,
  output = "results"
)
# }