【判断题】【消耗次数：1】
在特定条件下，加权算术平均数等于简单算术平均数。
①
正确
②
错误
参考答案：
复制
纠错
➡️如需代学继续教育，联系微信：yizhituziang
相关题目
【多选题】
在什么条件下，加权算术平均数等于简单算术平均数( )。
①
各组次数相等
②
各组变量值不等
③
变量数列为组距数列
④
各组次数都为1
⑤
各组次数占总次数的比重相等
随机题目
【单选题】
As it turned out to be a small house party, we___ so formally.
①
need not have dressed up
②
must not have dressed up
③
did not need to dress up
④
must not dress up
【单选题】
We have been hearing ______ accounts of your work.
①
favoured
②
favourable
③
favorite
④
favouring
【单选题】
The train______she was traveling was five minutes late.
①
that
②
which
③
on that
④
on which
【单选题】
The old men who gave away lots of money ______ highly of at yesterday’s meeting.
①
spoke
②
spoken
③
was spoken
④
were spoken
【单选题】
Once a picture is proved to be a forgery, it becomes quite ___.
①
invaluable
②
priceless
③
worthless
④
valuable
【单选题】
I’ll never forget the days ______ we spent together in the country.
①
which
②
on which
③
when
④
on that
【单选题】
The book ______ you want is on the desk.Which of the following isn’t right?
①
that
②
which
③
/
④
it
【单选题】
It is in 1960 ______ Chinese first put out flag on Mount Qomolangma.
①
when
②
that
③
which
④
in which