Question

According to Pollock and Edwards, a multiple regression analysis contains at least __ independent variables

	a.	0
	b.	1
	c.	2
	d.	none of the above

According to Pollock and Edwards, the .05 threshold suggests that researchers wish to commit _____ less than five times out of 100 tests.

	a.	individual fallacy
	b.	Type I error
	c.	Type II error
	d.	ecological fallacy

According to Pollock and Edwards, a p-value determines the exact probability of obtaining the observed sample difference under which assumption?

		The null hypothesis is accepted.
		The alternative hypothesis is rejected.
		The null hypothesis is rejected.
		None of the above.

According to Pollock and Edwards, a bivariate regression analysis contains how many independent variables?

	a.	2
	b.	0
	c.	more than 2
	d.	1

According to Pollock and Edwards, when the dummy variable equals zero, we interpret the slope coefficient's effect on the dependent variable to be

	a.	100
	b.	-1
	c.	0
	d.	1

According to Pollock and Edwards, a dummy variable can take the values of either zero or

	a.	-1
	b.	-100
	c.	100
	d.	1

Answer 1

Q1) Multiple linear regression is a regression analysis based on 1 dependent variable and 2 or more independent variables. Therefore min number of independent variables is 2 in a multiple linear regression ( hence the word multiple). Therefore 2 is the correct answer here.

Q2) The level of significance for a test puts a limit on the type I error that is the probability of rejecting the null hypothesis given that it is true. Therefore Type I error is the correct answer here.

Q3) The p-value is defined as the probability of getting the given sample statistic given that the null hypothesis is true. Therefore null hypothesis is accepted is the correct answer here.

Q4) The bivariate regression analysis is a regression for 1 dependent and one independent variable. Therefore 1 is the correct answer here.

Q5) For a dummy variable equal to 0, therefore wont be a value for bX possible as b*X = b*0 = 0. Therefore the coefficient effect on the dependent variable here would be 0.

Q6) The dummy variable is a binary variable which can therefore only have values either 0 or 1. Therefore 1 is the correct answer here.