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Question
If two variables moves in decreasing direction then the correlation is
Options
positive
negative
perfect negative
no correlation
Solution
positive
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| Description | X | Y |
| Number of pairs of observation | 15 | 15 |
| Arithmetic mean | 25 | 18 |
| Standard deviation | 3.01 | 3.03 |
| Sum of squares of deviation from the arithmetic mean | 136 | 138 |
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