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Chi square test for variance
03-19-2015, 11:53 AM (This post was last modified: 03-19-2015 10:05 PM by salvomic.)
Post: #1
Chi square test for variance
Hi all,
in Prime Inference App we have to tests for Chi2 (chi square): Goodness of Fit and 2-way-test...
However I need to calc chi2 test having only s^2 and σ^2 (H_0: σ^2 = value, H_1: σ^2 ≠ value)

(i.e. s^2 = 0.0153, σ^2 = 0.01, n=20)
the test to confront with chi-square should be
\[ X_{0}^{2}= \frac{(n-1)s^{2}}{σ_{0}^{2}} \]

(for my data I should have X^2= 29.07 against chi-square(19,1-0.05)=30.14 and then reject H_0)...

Can I do something already with Inference app?
If not I hope to see also this test Chi2 for variance added in Inference App (chi2 test section) in a next upgrade of the firmware... :-)

Thank you

Salvo

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Messages In This Thread
Chi square test for variance - salvomic - 03-19-2015 11:53 AM
RE: Chi square test for variance - parisse - 03-20-2015, 06:55 AM
RE: Chi square test for variance - Anders - 03-20-2015, 04:50 PM



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