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Question
Choose the correct alternative:
If r = 0.5, σx = 3, σy2 = 16, then bxy = ______
Options
0.375
0.667
2.667
0.093
Solution
0.375
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RELATED QUESTIONS
From the data of 7 pairs of observations on X and Y, following results are obtained.
∑(xi - 70) = - 35, ∑(yi - 60) = - 7,
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The following data about the sales and advertisement expenditure of a firms is given below (in ₹ Crores)
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| X | Y | |
| Mean | 13 | 17 |
| S.D. | 3 | 2 |
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Choose the correct alternative:
If for a bivariate data, bYX = – 1.2 and bXY = – 0.3, then r = ______
State whether the following statement is True or False:
If bxy < 0 and byx < 0 then ‘r’ is > 0
State whether the following statement is True or False:
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If u = `(x - "a")/"c"` and v = `(y - "b")/"d"`, then bxy = ______
byx is the ______ of regression line of y on x
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Given the following information about the production and demand of a commodity.
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| Production (X) |
Demand (Y) |
|
| Mean | 85 | 90 |
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∴ r = `square`
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