chi-square test

數學神童

for contingency table, if i get expected frequency less than 5, how should i combine classes? combine the row or the column???? and what if after i combine the classes, the degree of freedom is 1 ,should i use yates' correction??

DADDY_MUMMY

你可以combine adjacent cells，然后拿到combined expected frequency of at
least 5。。。

數學神童

i found one question wants me to perform 20% chi-square test.but i din find the 20% data in the data booklet.What should i do?

DADDY_MUMMY

你可以翻译吗？？？