【判断题】【消耗次数：1】
不同项目的风险大小使用标准差进行对比就行，标准差越大风险越大。
①
正确
②
错误
参考答案：
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相关题目
【简答题】
什么是标准差系数？标准差系数在什么条件下使用？
【单选题】
下列有关标准差的说法中错误的是（）。
①
样本标准差用S表示
②
标准差越大，数据的集中趋势越小
③
方差的算术平方根称为标准差
④
标准差的量纲与原变量一致
⑤
标准差越大，数据的离散趋势越大
随机题目
【单选题】
Mr Green _______a good teacher.
①
has always been
②
has been always
③
always has been
【单选题】
He _______ working before 6 o’clock.
①
usually has finished
②
has usually finished
③
usually finished
【单选题】
_______I hated most was the difficulties in the work in my early career, but now I like them.
①
That
②
What
③
/
【单选题】
In order to communicate with foreigners, we_______foreign language.
①
need to study
②
need studying
③
need study
【单选题】
The employment rate has gone up, _______many graduates think it hard to find appropriate jobs.
①
so
②
and
③
but
【单选题】
You are better at carrying out decision than _______plans.
①
to make
②
make
③
making
【单选题】
_______ he knew it was just a joke, _______Peter looked frightened.
①
Although, but
②
/, and
③
Although, /