Question
Select the correct entries from the dropdown menus to complete the following table of possible results when analyzing the effect of a third variable Z
Select the correct entries from the dropdown menus to complete the following table of possible results when analyzing the effect of a third variable Z on the relationship between two variables X and Y.
Compared with Bivariate Table, Partial Tables Show | Pattern | Implications for Further Analysis | Likely Next Step |
---|---|---|---|
Same relationship between X and Y (gammas for partial tables within 0.10 of bivariate gamma) | Interaction, Direct, Spurious/intervening | Incorporate Z, Disregard Z | Analyze another Z variable |
Weaker relationship between X and Y (gammas from partial tables at least 0.10 weaker than bivariate gamma) | Interaction, Direct, Spurious/intervening | Incorporate Z, Disregard Z | Focus on relationship between Z and X or among X, Y, and Z |
Mixed (at least 0.10 difference in gammas between partial tables and between partial tables and bivariate table) | Interaction, Direct, Spurious/intervening | Incorporate Z, Disregard Z | Analyze subgroups (categories of Z) separately |
Consider the following bivariate table showing the relationship between job satisfaction (low or high) and longevity, that is, the time working for the company (low = less than 2 years, high = 2 years or more), among workers for a fast-food chain.
Job Satisfaction (X) | |||
---|---|---|---|
Longevity (Y) | Low | High | Totals |
Low | 14 (28.0%) | 27 (58.7%) | 41 |
High | 36 (72.0%) | 19 (41.3%) | 55 |
Totals | 50 (100.0%) | 46 (100.0%) | 96 |
Gamma = -0.5703 |
The data in the table suggest that there is no, a positive, a negative, or a perfect association between job satisfaction (X) and longevity (Y).
Here are the partial tables showing the bivariate relationship between X and Y after controlling for gender.
Job Satisfaction (X) | |||
---|---|---|---|
Longevity (Y) | Low | High | Totals |
Low | 11 (68.8%) | 26 (72.2%) | 37 |
High | 5 (31.3%) | 10 (27.8%) | 15 |
Totals | 16 (100.0%) | 36 (100.0%) | 52 |
Gamma = -0.0833 |
B. Women
Job Satisfaction (X) | |||
---|---|---|---|
Longevity (Y) | Low | High | Totals |
Low | 3 (8.8%) | 1 (10.0%) | 4 |
High | 31 (91.2%) | 9 (90.0%) | 40 |
Totals | 34 (100.0%) | 10 (100.0%) | 44 |
Gamma = -0.0690 |
Compared with the bivariate table, the partial tables show the same, a mixed, a weaker, or a stronger relationship between job satisfaction and longevity. This is evidence of a direct, an interactive, a spurious or intervening, or a fallaciousrelationship between the X and Y variables and implies that you should incorporate, modify, disregard, elaborate the variable Z (gender) in further analysis.
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