举一反三
- If the coefficient of determination is 0.975, then the slope of the regression line:
- 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 .
- If the value of the sum of squares for error, SSE, equals zero, then the coefficient of determination must equal zero.
- The Pearson coefficient of correlation r equals 1 when there is/are no:
- Pearson’s product moment correlation coefficient 可用来判断：
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
The process to evaluate the prediction errors of a machine learning model is called ________() A: Error analysis . B: Bias analysis C: Correlation analysis D: Regression analysis
- 2
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?
- 3
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
- 4
In the calculation equation [img=235x39]1803b953831b0d6.png[/img] of normal section bearing capacity for axial compressed members, the coefficient 0.9 means ( ). A: the partial coefficient B: the reliability adjustment coefficient C: the combination coefficient D: the empirical coefficient