Conditions for Linear Regression Inference
A researcher is investigating a possible linear relationship between hours spent studying and exam scores. A scatterplot of the data reveals no apparent pattern, and the correlation coefficient is r = 0.12. Based on these observations, which of the following inference procedures is not appropriate?
A
Linear regression t-test
B
Confidence interval for correlation coefficient
C
Spearman rank correlation test
D
Test for correlation coefficient
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