Q15. An analyst gathered information about three economic variables. He noted that whenever variable A increased by one unit, variable B increased by 0.5 units but variable C decreased by 0.5 units. The correlation between variables A and B and the correlation between variables A and C, respectively, are closest to:
| Correlation between variables A and B | Correlation between variables A and C | A | 0.5 | -1.0 | B | 0.5 | -0.5 | C | 1.0 | -1.0 | D | 1.0 | -0.5 |
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发表于 2007-10-24 19:11
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