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Question
Choose the correct alternative:
If the regression equation X on Y is 3x + 2y = 26, then bxy equal to
Options
`3/2`
`2/3`
`- 3/2`
` - 2/3`
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Solution
`- 2/3`
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RELATED QUESTIONS
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| Advertisement expenditure (₹ in lakh) (X) |
Sales (₹ in lakh) (Y) | |
| Arithmetic Mean | 10 | 90 |
| Standard Mean | 3 | 12 |
Correlation coefficient between X and Y is 0.8
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| X | Y | |
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If byx < 0 and bxy < 0, then r is ______
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bxy and byx are ______
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State whether the following statement is True or False:
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Obtain the two regression lines:
| ADVERTISEMENT (x) (₹ in lakhs) |
DEMAND (y) (₹ in lakhs) |
|
| Mean | 10 | 90 |
| Variance | 9 | 144 |
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| X | Y | |
| Mean | 13 | 17 |
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| x | y | xy | x2 | y2 |
| 6 | 9 | 54 | 36 | 81 |
| 2 | 11 | 22 | 4 | 121 |
| 10 | 5 | 50 | 100 | 25 |
| 4 | 8 | 32 | 16 | 64 |
| 8 | 7 | `square` | 64 | 49 |
| Total = 30 | Total = 40 | Total = `square` | Total = 220 | Total = `square` |
bxy = `square/square`
byx = `square/square`
∴ Regression equation of x on y is `square`
∴ Regression equation of y on x is `square`
