Statistics Test

Result

Statistics Test - 24

Score
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Weekly Quiz Competition

Question 1
4 / -1

A
2

B
5

C
8

D
None of these

Solution
Question 2
4 / -1

Which of the following statements is correct?

A
Correlation coefficient is the arithmetic mean of the regression coefficients

B
Correlation coefficients is the geometric mean of the regression coefficients

C
Correlation coefficients is the harmonic mean of the regression coefficients

D
None of the above

Solution
Question 3
4 / -1

If correlation coefficient is negative, then the regression coefficient is

A
Zero

B
One

C
Negative

D
Positive
Question 4
4 / -1

If correlation coefficient be zero, then the lines of regression will be

A
Parallel to axes

B
Perpendicular to axes

C
Inclined at any angle with axes

D
Coincident

Solution
Question 5
4 / -1

A
– 0.5

B
0.5

C
1.0

D
– 1.0

Solution
Question 6
4 / -1

If one regression coefficient be unity, then the other will be

A
Greater than unity

B
Greater than or equal to unity

C
Less than or equal to unity

D
None of the above
Question 7
4 / -1

The coefficient of correlation between two variables x and y is 0.8 while 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

Solution
Question 8
4 / -1

If the lines of regression coincide, then the value of correlation coefficient is

A
0

B
1

C
0.5

D
0.33

Solution
Question 9
4 / -1

If both the regression lines intersect perpendicularly, then

A
r < –1

B
r = –1

C
r = 0

D
r = 1/2
Question 10
4 / -1

Angle between two lines of regression is given by

A

B

C

D

Solution