Return the value of non-centralized parameter for the chi-square distribution given type I, II error and degrees of freedom.
getncp(df, alpha = 0.05, beta = 0.2, d = 1e-04, start = 5,
dec = 2)Degrees of freedom of chi-square test
Type I error rate of chi-square test. The default alpha=0.05
Type II error rate of chi-square test. The default beta=0.20
Critical value of distance of the searching procedure. The search of non-centralized parameter value stops at the absolute distance between the actual power and the target power less than the value of d. The default value of d=0.0001
Initial value of searching the non-centralized parameter.
A numeric number to specify the decimal of the output parameter value. The default of dec=2.
The value of non-centralized parameter for the chi-square distribution