Question

In a regression analysis, which of the following statements are true?
I. A residual plot with no pattern indicates a weak linear relationship.
II. A data point is influential if omitting it from the analysis gives a very different regression model.

	a.	I only.
	b.	II only
	c.	I and II
	d.	Neither statement is true

Answer 1

Answer:

In a regression analysis, which of the following statements are true?

II. A data point is influential if omitting it from the analysis gives a very different regression model.

This statement is "true" because a powerful point is an exception that extraordinarily influences the slope of the regression line. removing an influential  will change the estimation of the slope of the regression line.

I. A residual plot with no pattern indicates a weak linear relationship.This statement is "False" statement.

Therefore only II statement is true.

Answer: II Only

Hence the "Option - b" is the correct answer.