完全随机设计方差分析中()。

对于总合计数n为400的四个样本频率比较的资料作卡方检验，其自由度为()。

A.399
B.395
C.1
D.3
E.8

点击查看答案&解析

When we talk about “parts of speech”, we know that a describing word we use to describe a noun is a an ______; a word that can be used instead of a noun is a an _______; a word used in front of a countable or uncountable noun is a an ___________.A、pronoun, article, adjectiveB、article, adjective, pronounC、adjective, article, pronounD、adjective, pronoun, article

A.
A、pronoun,

点击查看答案&解析