Ftest
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Visited: Ftest
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Purpose
Inverse F test and F test.
Synopsis
- fstat = ftest(p,n,d,flag)
Description
fstat = ftest(p,n,d) or fstat = ftest(p,n,d,1) calculates the F statistic fstat given the probability point p and the number of degrees of freedom in the numerator n and denominator d.
fstat = ftest(p,n,d,2) calculates the probability point fstat given the F statistic p and the number of degrees of freedom in the numerator n and denominator d.
Inputs
- p = probability point or F statistic, depending upon flag.
- n = number of degrees of freedom in the numerator.
- d = number of degrees of freedom in the denominator.
Optional Inputs
- flag = [ {1} | 2 ]; determines mode of function (1 => F test, 2=> inverse F test).
Output
- fstat = F statistic or probability point, depending upon flag.
Examples
a = ftest(0.05,5,8) a = 3.6875 a = ftest(3.6875,5,8,2) a = 0.050