ncfcdf
Noncentral F cumulative distribution function (CDF).
p = ncfcdf (x, df1, df2, delta)
returns
the noncentral F cdf with df degrees of freedom and noncentrality
parameter delta at the values of X.
The size of p is the common size of the input arguments. Scalar input arguments x, df1, df2, delta are regarded as constant matrices of the same size as the other inputs.
p = ncfcdf (x, df1, df2, delta, "upper"
returns the upper tail probability of the noncentral T distribution with
df1 and df2 degrees of freedom and noncentrality parameter
delta at the values in x.
See also: ncfinv, ncfpdf, ncfrnd, ncfstat
Source Code: ncfcdf
## Compare the noncentral F cdf with DELTA = 10 to the F cdf with the ## same number of numerator and denominator degrees of freedom (5, 20) x = (0.01:0.1:10.01)'; p1 = ncfcdf (x, 5, 20, 10); p = fcdf (x, 5, 20); plot (x, p, "-", x, p1, "-"); |