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प्रश्न
Choose the correct alternative.
If equations of regression lines are 3x + 2y − 26 = 0 and 6x + y − 31 = 0 then means of x and y are __________
पर्याय
(7, 4)
(4, 7)
(2, 9)
(-4, 7)
उत्तर
If equations of regression lines are 3x + 2y − 26 = 0 and 6x + y − 31 = 0 then means of x and y are
(4, 7).
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संबंधित प्रश्न
Choose the correct alternative:
There are ______ types of regression equations
Compute the appropriate regression equation for the following data:
| X [Independent Variable] |
2 | 4 | 5 | 6 | 8 | 11 |
| Y [dependent Variable] | 18 | 12 | 10 | 8 | 7 | 5 |
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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Corr (x, x) = _____
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byx = ______
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bxy = ______
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Cov (x, y) = __________
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If bxy < 0 and byx < 0 then 'r' is __________
Fill in the blank:
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If u = `"x - a"/"c" and "v" = "y - b"/"d"` then byx = _______
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Corr (x, y) = Corr (y, x)
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State whether the following statement is True or False.
byx is correlation coefficient between X and Y
State whether the following statement is True or False.
If u = x - a and v = y - b then rxy = ruv
State whether the following statement is True or False:
Correlation analysis is the theory of games
If bxy < 0 and byx < 0 then 'r ' is ______.
