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Home
Statistics Test - 10
Statistics Test - 10
Time Left -
Question
1/10
4 / -1
The correlation coefficient of two variables
x
and y is 0.8. The regression coefficient of y on
x
is 0.2, then the regression coefficient of
x
on y is
A
3.2
B
-3.2
C
4
D
0.16
Question
2/10
4 / -1
A
-3.1
B
-3.2
C
-3.3
D
-3.4
Question
3/10
4 / -1
If the lines of regression are 3
x
+ 12y = 19 and 3y + 9
x
= 46, then r
x
y
will be
A
0.289
B
-0.289
C
0.209
D
None of these
Question
4/10
4 / -1
If θ is the angle between two regression lines with correlation coefficient γ, then
A
sin θ ≥ 1- γ
2
B
sin θ ≤ 1- γ
2
C
sin θ ≤ γ
2
+ 1
D
sin θ ≤ γ
2
- 1
Question
5/10
4 / -1
A
(8, 5)
B
(5, 8)
C
(5, 5)
D
(8, 8)
Question
6/10
4 / -1
The resultant of two forces 3P and 2P is R, if the first force is doubled, the resultant is also doubled. Theangle between the forces is
A
B
C
D
Question
7/10
4 / -1
A
B
C
D
Question
8/10
4 / -1
The maximum resultant of two forces is P and the minimum resultant is Q, the two forces are at right angles, the resultant is
A
P + Q
B
P – Q
C
D
Question
9/10
4 / -1
A force is resolved into components P and Q equally inclined to it. Then,
A
P = 2Q
B
2P = Q
C
P = Q
D
None of these
Question
10/10
4 / -1
The resultant of two equal forces is equal to either of these forces. The angle between them is
A
B
C
D
Submit
-
Answered -
0
Un-answered -
10
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2
3
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8
9
10
Submit
-
Answered -
0
Un-answered -
10
1
2
3
4
5
6
7
8
9
10
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