7. Answer the following with TRUE or FALSE. It is good practice to explain your

Question

7. Answer the following with TRUE or FALSE. It is good practice to explain your answers (and it is the only way to get partial credit). (a) If we reject the null hypothesis for the Fligner Killeen test, a plot of es vs X will show no pattern. (b) The F test for = 0 and the t test for A=0 will always draw the same conclusion in simple linear re- (c) A transformation of variables may help adjust for (d) If there are outliers in the scatter plot, we should not gression non-constant variance. rue tam anhunptios of linear regression

Explanation / Answer

a) FALSE : if we reject null hypothesis then it means that variance is not homogenous and hence it will show pattern.

b) TRUE

c) TRUE , When we have non-constant variance or skwed variables , then tranformation helps adjust non-constant variance.

d) FALSE , If there are outliers we should remove them or they may affect our assumptions.

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