Real Data by Zealure C. Holcomb

Author:Zealure C. Holcomb
Language: eng
Format: epub
Publisher: Routledge

Data: The perfectionism, checking, and washing scores are shown in Table 1.

Table 1 Scores on three variables for 41 college men

Calculations: For the convenience of those who are using calculators instead of computers, the sums of the scores, the sums of the squared scores, and the sums of the products of the scores are given below. Note that the subscripts indicate the variables. For example, ƩX1 is the sum of the scores for variable 1.

4. What is the value of the Pearson r for the relationship between variables 1 and 2? (The symbol for this is r12; it indicates how well variable 2 predicts variable 1.)

5. What is the value of the Pearson r for the relationship between variables 1 and 3? (The symbol for this is r13; it indicates how well variable 3 predicts variable 1.)

6. What is the value of the Pearson r for the relationship between variables 2 and 3? (The symbol for this is r23; it indicates the extent of the correlation between the two predictors.)

7. What is the value of R for predicting variable 1 from the combination of variables 2 and 3? Use this formula:

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