The OpenD Programming Language

studentsTTest

Two-sample T test for a difference in means, assumes variances of samples are equal. Alteratives are Alt.less, meaning mean(sample1) - mean(sample2) < testMean, Alt.greater, meaning mean(sample1) - mean(sample2) > testMean, and Alt.twoSided, meaning mean(sample1) - mean(sample2) != testMean.

sample1 and sample2 may be either iterables with elements implicitly convertible to double or summary structs (see isSummary).

  1. ConfInt studentsTTest(T data, double testMean, Alt alt, double confLevel)
  2. ConfInt studentsTTest(T sample1, U sample2, double testMean, Alt alt, double confLevel)
    studentsTTest
    (
    T
    U
    )
    (,,
    double testMean = 0
    ,,
    double confLevel = 0.95
    )

Return Value

Type: ConfInt

A ConfInt containing the T statistic, the P-value, and the boundaries of the confidence interval for the difference between means of sample1 and sample2 at the specified level.

References: http://en.wikipedia.org/wiki/Student%27s_t-test

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