Wrap t.test (difference in means by group).

# S3 method for numeric
wrapTTest(
  x,
  pop2,
  ...,
  y = NULL,
  alternative = c("two.sided", "less", "greater"),
  mu = 0,
  paired = FALSE,
  var.equal = FALSE,
  conf.level = 0.95,
  na.rm = FALSE
)

Arguments

x

numeric population 1

pop2

numeric population 2

...

extra arguments passed to ttest

y

passed to t.test

alternative

passed to t.test

mu

passed to t.test

paired

passed to t.test

var.equal

passed to t.test

conf.level

passed to t.test

na.rm

logical, if TRUE remove NA values

Value

formatted string and fields

Examples

d <- data.frame(x=c(1,2,3,4,5,6,7,7), y=c(1,1,2,2,3,3,4,4)) render(wrapTTest(d$x, d$y), pLargeCutoff=1)
#> [1] "Welch Two Sample t-test, two.sided: (t=2.072, df=10.62, p=0.06349)."
# confirm p not order depedent render(wrapTTest(d$y, d$x),pLargeCutoff=1)
#> [1] "Welch Two Sample t-test, two.sided: (t=-2.072, df=10.62, p=0.06349)."