Pearson’s product moment correlation coefficient 可用来判断：
X和Y是否正相关X和Y是否负相关
举一反三
- 2(marks 3). Which of the following is an incorrect statement. A: The product moment correlation coefficient can be used with non-numeric data. B: The product moment correlation coefficient is the definitive measure of correlation. C: The rank correlation coefficient can be used as an approximation to the product moment coefficient. D: The rank correlation coefficient can be used with non-numeric data .
- The Pearson coefficient of correlation r equals 1 when there is/are no:
- In regression analysis, if the coefficient of determination is 1.0, then the coefficient of correlation must be 1.0.
- 中国大学MOOC: 皮尔逊相关系数（Pearson Correlation coefficient ）可将两组变量之间的关联度规整到一定的取值范围内。下面对皮尔逊相关系数描述不正确的是（ ）
- The distribution bending moment in the moment distribution method is equal to: A: Fixed end bending moment B: Distal bending moment C: The inverse of the unbalanced moment is multiplied by the distribution coefficient D: Multiplying the bending moment of the fixed end by the distribution coefficient
内容
- 0
If the coefficient of correlation r = 0, then there is no linear relationship whatsoever between the dependent variable y and the independent variable x.
- 1
中国大学MOOC: Even if the correlation coefficient is high (near +1) or low (near-1), it may not be significant. True or false?
- 2
Even if the correlation coefficient is high (near +1) or low (near-1), it may not be significant. True or false? A: 正确 B: 错误
- 3
The magnitude of a moment is the product of the force and（）.
- 4
A) the moment C) the moment's B) a moment D) a moment's A: the moment B: a moment C: the moment's D: a moment's