The value of the chi-square random variable χ2 with df=k that cuts off a right tail of area c is denoted χ2c and is called a critical value. ... <看更多>

Using isf() method import scipy as sp sp.stats.chi2.isf(0.1, 20, loc=0, scale=1) # P=10%, df=20 # donne 28.412... as in books table. ... <看更多>

5.99 is the critical value for 2 degrees of freedom and p = 0.05. So any value of χ2 greater than 5.99 is significant at the 0.05 level. ... <看更多>