题目内容
(请给出正确答案)
[单选题]
下列关于方差分析的表述中,错误的是()。
A.检验若干总体的均值是否相等的一种统计方法
B. 检验若干总体的方差是否相等的一种统计方法。
C. 只要有两个总体的均值不相等,就拒绝原假设。
D. F检验值等于平均组间方差除以平均组内方差。
如搜索结果不匹配,请 联系老师 获取答案
A.检验若干总体的均值是否相等的一种统计方法
B. 检验若干总体的方差是否相等的一种统计方法。
C. 只要有两个总体的均值不相等,就拒绝原假设。
D. F检验值等于平均组间方差除以平均组内方差。
第2题
—When did he go to America?
—Oh, he ______ there since half a year ago.
A went
B has been
C has gone
D was
第3题
Shelly _____ California for Texas and ____ there ever since. You can go and pay her a visit on your way to Mexico.
A left, worked
B has left, had worked
C left, has worked
D has left, worked
第4题
As a general rule, snakes ______ unless offended.
A will not be biting
B do not bite
C are not biting
D have not bitten
为了保护您的账号安全,请在“上学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!