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【判断题】
"记事本"实用程序的基本功能是文字处理。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】超滤系数(ultrafiltration coefficient，Kf)
【简答题】克郎α系数(Cronbach α Coefficient)
【单选题】—How was the dinner last night? —It was OK, but I made a mistake . I____ arrive at 7:00,but I arrived at 8:00.
A.
was willing to
B.
was supposed to
C.
was allowed to
D.
was used to
【简答题】克郎α系数(Cronbach α Coefficient)
【多选题】Regarding correlation coefficient, which of the following are true?
A.
If the correlation coefficient of two attributes is 0, then the two attributes are independent.
B.
If the correlation coefficient of two attributes is greater than 0, then there is causality between the two attributes.
C.
If we normalize two attributes with z-score normalization, then their correlation coefficient is equal to their covariance.
D.
Correlation coefficient can be used to detect the redundancy among attributes.
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