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Request different degrees of freedom (OneSampleTTest) #181

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marinadietze opened this issue Feb 13, 2020 · 0 comments · May be fixed by #188
Open

Request different degrees of freedom (OneSampleTTest) #181

marinadietze opened this issue Feb 13, 2020 · 0 comments · May be fixed by #188

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@marinadietze
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marinadietze commented Feb 13, 2020 •
edited

In the OneSampleTTest functions, the degrees of freedom are fixed as n-1. But if we want to perform a t-test for the p regression parameters, the degrees of freedom must be equal to n-p. Is it possible to generalize the OneSampleTTest function by:

function OneSampleTTest(xbar::Real, stddev::Real, n::Int, μ0::Real=0, df::Int = n-1)
    stderr = stddev/sqrt(n)
    t = (xbar-μ0)/stderr
    OneSampleTTest(n, xbar, df, stderr, t, μ0)
end
birm added a commit to birm/HypothesisTests.jl that referenced this issue Mar 14, 2020
@birm
allow manual df specification re JuliaStats#181
7b490c6
@birm birm linked a pull request Mar 14, 2020 that will close this issue
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T-tests Request different degrees of freedom birm/HypothesisTests.jl
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@marinadietze