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प्रश्न
The equations of the two lines of regression are 6x + y − 31 = 0 and 3x + 2y – 26 = 0. Find the value of the correlation coefficient
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उत्तर
r = `+- sqrt("b"_(xy) * "b"_(yx))`
= `+- sqrt((-1)/6 xx (-3)/2)`
= `+- 1/2`
= `+- 0.5`
Since the values of bxy and byx are negative,
r is also negative.
∴ r = – 0.5
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संबंधित प्रश्न
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| Arithmetic Mean | 10 | 90 |
| Standard Mean | 3 | 12 |
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| Production (X) |
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|
| Mean | 85 | 90 |
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| 1 | 5 | – 2 | – 4 | 8 | 4 | 16 |
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| 3 | 9 | 0 | 0 | 0 | 0 | 0 |
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| 5 | 13 | 2 | 4 | 8 | 1 | 16 |
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