The Pearson coefficient of correlation r equals 1 when there is/are no:
unexplained variation.
举一反三
- Pearson’s product moment correlation coefficient 可用来判断：
- 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 .
- In regression analysis, if the coefficient of determination is 1.0, then the coefficient of correlation must be 1.0.
- If the coefficient of correlation r = 0, then there is no linear relationship whatsoever between the dependent variable y and the independent variable x.
- 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（ ）
内容
- 0
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?
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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
- 2
If the value of the sum of squares for error, SSE, equals zero, then the coefficient of determination must equal zero.
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根据下面的变量X和变量Y的散点图，可以看出这两个变量的Pearson相关系数r的取值范围是（ ） A: r≤-1 B: 0≤r＜1 C: r≥1 D: -1≤r＜0
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If you were to run an experiment on the effects of temperatures on aggressive behavior, aggressive behavior would be the ________. A: hypothesis B: dependent variable. C: independent variable D: correlation coefficient