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Question
If r = – 1, then correlation between the variables
Options
perfect positive
perfect negative
negative
no correlation
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Solution
perfect negative
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In the following data one of the value of y is missing. Arithmetic means of x and y series are 6 and 8 respectively. `(sqrt(2) = 1.4142)`
| x | 6 | 2 | 10 | 4 | 8 |
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Estimate missing observation.
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| Y | 121 | 72 | 88 | 60 | 81 | 87 | 123 | 92 |
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