看到一篇文章有这样一段
(a) Assume the GEV distribution as a parent distribution.
(b) Generate data set with given shape parameters considering various sample sizes
and plotting position formulas. In this case, power test was performed for
considering sample sizes such as n = 10, 25, 50, 100, and 200 and plotting
position formulas by derived plotting formula, Blom(1958), Gringorten(1963),
Filliben(1975), and Cunnane(1978). In addition, the assumed shape parameters
are -0.3, -0.2, -0.1, 0.1, 0.2, and 0.3.
(c) Frequency analysis is applied to the generated data set. The method of
probability weight moments is used for the parameter estimation in this case. In
addition, PPCC test using different plotting position formulas is applied to the
generated data set at 5% significance level.
(d) Repeat the procedure (from step (a) to step (c)) 10,000 times to obtain 10,000
rejection ratio(%).
(e) Estimate the ability of rejection by counting rejection ratio(%).


第四步和第五步中间的rejection ratio指的什么东西，怎么计算