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प्रश्न
Fill in the blank:
If byx > 1 then bxy is _______
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उत्तर
If byx > 1 then bxy is < 1.
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संबंधित प्रश्न
Choose the correct alternative:
There are ______ types of regression equations
From the following data estimate y when x = 125.
| X | 120 | 115 | 120 | 125 | 126 | 123 |
| Y | 13 | 15 | 14 | 13 | 12 | 14 |
The following table gives the aptitude test scores and productivity indices of 10 workers selected at random.
| Aptitude score (X) | 60 | 62 | 65 | 70 | 72 | 48 | 53 | 73 | 65 | 82 |
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| X | 59 | 60 | 61 | 62 | 63 |
| Y | 78 | 82 | 82 | 79 | 81 |
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The following sample gives the number of hours of study (X) per day for an examination and marks (Y) obtained by 12 students.
| X | 3 | 3 | 3 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 7 | 8 |
| Y | 45 | 60 | 55 | 60 | 75 | 70 | 80 | 75 | 90 | 80 | 75 | 85 |
Obtain the line of regression of marks on hours of study.
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If u = `("x - a")/"c" and "v" = ("y - b")/"d" "then" "b"_"yx"` = _________
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If u = `("x - a")/"c" and "v" = ("y - b")/"d" "then" "b"_"xy"` = _________
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Corr (x, x) = _____
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Cov (x, y) = __________
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If bxy < 0 and byx < 0 then 'r' is __________
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If equations of regression lines are 3x + 2y − 26 = 0 and 6x + y − 31 = 0 then means of x and y are __________
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If bxy < 0 and byx < 0 then ‘r’ is __________
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If u = `"x - a"/"c" and "v" = "y - b"/"d"` then bxy = _______
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|bxy + byx| ≥ ______
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Regression equation of Y on X is `("y" - bar "y") = "b"_"yx" ("x" - bar "x")`
State whether the following statement is True or False.
bxy and byx are independent of change of origin and scale.
‘r’ is regression coefficient of Y on X
State whether the following statement is True or False.
If u = x - a and v = y - b then bxy = buv
State whether the following statement is True or False.
If u = x - a and v = y - b then rxy = ruv
Compute the appropriate regression equation for the following data:
| x (Dependent Variable) | 10 | 12 | 13 | 17 | 18 |
| y (Independent Variable) | 5 | 6 | 7 | 9 | 13 |
