FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 13: Partial Correlation and

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 21

Multiple Choice

Review LaterAdd Note

Review Later

In the

A) chi square
B) gamma
C) Pearson's r
D) the partial correlation coefficient

Correct Answer

verified

Show Answer

Question 22

Multiple Choice

Review LaterAdd Note

Review Later

Which of the following is a correctly stated standardized regression equation?

A) Zy = a - b1*Z1 - b2Z2
B) Zy = a + b1X1 - b2X2
C) Zy = b1*Z1 + b2*Z2
D) Zy = b1*Z1 - b2Z2

Correct Answer

verified

Show Answer

Question 23

Multiple Choice

Review LaterAdd Note

The techniques of

A researcher is examining the effects of income (X1) and number of friends (X2) on personal happiness (Y) and finds an R² of 0.45. Which of the following is a correct interpretation of this result?

After controlling for Z, a researcher finds evidence of a spurious relationship between X and Y. What step should be taken next?

To investigate the combined effects of several independent variables on a single dependent variable, we use

Partial correlation will detect all of the following relationships among variables except

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 0.06. Which of the following correctly describes this outcome? This is a ______ relationship

After controlling for Z, the partial correlation coefficient is .78. The bivariate Pearson's r between X and Y was only .51. Which interpretation is consistent with these results?

The 'first-order' partial correlation coefficient measures

In the least-squares

Which of the following would be consistent with a direct relationship between X and Y?

A standardized regression equation is stated as: Zy = (.46) Z1 + (.47) Z1. Which conclusion is most consistent with this formula?

Which of the following would be consistent with a spurious relationship between X and Y?

In the multiple regression equation, the partial slopes are represented by the symbol

After controlling for Z, the partial correlation coefficient between X and Y is the same value as the bivariate Pearson's r. This pattern would be taken as evidence of

To the extent that the variables do not meet the assumptions of regression analysis, coefficients and slopes become

While unstandardized partial slopes permit predictions of Y in the original units of the variable, standardized partial slopes permit an assessment of

When examining a bivariate relationship using Pearson's r, the partial correlation computed while using one control variable is called

After controlling for Z, a researcher finds evidence of a direct relationship between X and Y. What step should be taken next?