tTest
tTest(
sample,other,options?):TTestResult
Defined in: t-test.ts:63
Student’s t-test, in whichever of its three forms the arguments describe.
Passing a number as other runs the one-sample test against it as a
hypothesised mean; passing a second sample runs the two-sample test, or the
paired test with options.paired. The form is read off the arguments rather
than named by an option, because an option could contradict them.
The p-value comes from the tail of the t distribution computed directly, not
from 1 − cdf, so a result significant at 1e-17 reports that rather than
zero.
Parameters
Section titled “Parameters”sample
Section titled “sample”readonly number[]
The sample. Not modified.
number | readonly number[]
A second sample, or the hypothesised mean to test against.
options?
Section titled “options?”How the samples relate and which alternative to test.
Returns
Section titled “Returns”The statistic, its degrees of freedom and the p-value.
Throws
Section titled “Throws”When a sample is too small, or a paired test is given samples of different lengths.