In regression analysis we use the Spearman rank correlation ...

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In regression analysis we use the Spearman rank correlation coefficient to measure and test to determine whether a relationship exists between the two variables if:
 a. one or both variables may be ordinal
  b. both variables are interval but the normality requirement is not met
  c. both one or both variables may be ordinal and both variables are interval but the normality requirement is not met
  d. neither one or both variables may be ordinal nor both variables are interval but the normality requirement is not met
  e. none of these

Question 2

If the plot of the residuals is fan shaped, which assumption of regression analysis if violated?
 a. Normality.
  b. Homoscedasticity.
  c. Independence of errors.
  d. No assumptions are violated, the graph should resemble a fan.
  e. All of these.

[Viet Thy]

Answer to Question 1

C

Answer to Question 2

B

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