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Match the following columns
Match the following columns
| Column I | Column II |
| a. The coefficient of correlation | 1. Spearman |
| b. If r = 0.3, r2 will be | 2. Standard error |
| c. The probable error of correlation coefficient is 0.6745 of | 3. Varies between ± 1 |
| d. The rank correlation coefficient was developed by | 4. 0.09 |
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