Conditions for Regression Slope Inference
A confidence interval is to be constructed for the slope of a least-squares regression line modeling the relationship between annual income, in thousands of dollars, and years of education. Which of the following is NOT a required condition for this inference procedure to be valid?
A
The observations must be independent
B
The relationship between the variables must be exactly linear
C
The residuals should be approximately normally distributed
D
The standard deviation of residuals should be constant
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