Advertisements
Advertisements
Question
‘r’ is regression coefficient of Y on X
Options
True
False
Solution
This statement is False.
APPEARS IN
RELATED QUESTIONS
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 |
Productivity Index (Y) | 68 | 60 | 62 | 80 | 85 | 40 | 52 | 62 | 60 | 81 |
Obtain the two regression equations and estimate the test score when the productivity index is 75.
The following are the marks obtained by the students in Economics (X) and Mathematics (Y)
X | 59 | 60 | 61 | 62 | 63 |
Y | 78 | 82 | 82 | 79 | 81 |
Find the regression equation of Y on X.
From the following data, find the regression equation of Y on X and estimate Y when X = 10.
X | 1 | 2 | 3 | 4 | 5 | 6 |
Y | 2 | 4 | 7 | 6 | 5 | 6 |
Choose the correct alternative.
If u = `("x - a")/"c" and "v" = ("y - b")/"d" "then" "b"_"yx"` = _________
Choose the correct alternative.
If u = `("x - a")/"c" and "v" = ("y - b")/"d" "then" "b"_"xy"` = _________
The regression equation of y on x is given by 3x + 2y − 26 = 0. Find byx.
Choose the correct alternative.
byx = ______
Choose the correct alternative.
bxy = ______
Choose the correct alternative.
If bxy < 0 and byx < 0 then 'r' is __________
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 __________
Fill in the blank:
If bxy < 0 and byx < 0 then ‘r’ is __________
Fill in the blank:
Regression equation of Y on X is_________
Fill in the blank:
There are __________ types of regression equations.
Fill in the blank:
If u = `"x - a"/"c" and "v" = "y - b"/"d"` then bxy = _______
Fill in the blank:
|bxy + byx| ≥ ______
State whether the following statement is True or False.
Corr (x, y) = Corr (y, x)
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 |