Exam 13: Partial Correlation and

A Pearson's r calculated for a bivariate relationship is .50. After controlling for Z, the partial correlation coefficient is .07. This outcome would be evidence of a(n) _____________ relationship between X and Y.

A researcher examines the relationship between poverty and crime rates for 100 metropolitan areas and finds a zero-order correlation of 0.37. She controls for the percent of families that are headed by single parents and finds a first order partial correlation of 0.33. Which of the following correctly describes this outcome? This is a ______ relationship

Partial and multiple correlation require data which are

A researcher wants to predict score on personal happiness (Y) from score on income (X1) and number of friends (X2). Which of the following would be the proper course of action?

The regression equation for a particular relationship is Y = 10 + (.78) X1 + (-.54) X2. Which conclusion is consistent with this equation?

A Pearson's r calculated for the bivariate relationship between X and Y is .50. After controlling for Z, the partial correlation coefficient is .49. This outcome would be evidence of a(n) _____________ relationship between X and Y.

If a = 17, b1 = 5, b2 = 20, X1= 100, and X2 = 200, what would the predicted Y score be?

A researcher is trying to determine if income (X1) or number of friends (X2) is more important in determining personal happiness (Y). Which of the following would be the most profitable course of action?

Under what condition could the coefficient of

In regression analysis, the standardized partial slopes are symbolized as

If a = 1, b1 = 10, b2 = 10, X1= 2, and X2 = 3, what would the predicted Y score be?

After controlling for Z, the partial correlation coefficient is .78. The bivariate Pearson's r between X and Y was only .51. What should the researcher do next?

If the beta-weight of the first independent (X1) is .45 and the beta-weight of the second independent (X2) is -.50, then

With two independent variables, the least-squares

Which of the following is not a prerequisite for the use of the techniques of

The partial correlation coefficient between X and Y after controlling for Z shows a much weaker relationship than the Pearson's r computed for X and Y. This would be taken as evidence of a(n) _____________ relationship between X and Y.

The coefficient of

The text cites an example in which

Standardized partial slopes are also called

Partial and multiple correlation are based on