Quiznetik
Business Statistics | Set 3
1. The Correlation coefficient between two variables is the………………..of their regression coefficients.
A. Arithmetic mean
B. Geometric mean
C. Harmonic mean
D. None of these
Correct : B. Geometric mean
2. The percent of the total variation of the dependent variable Y explained by the set of independent variables X is measured by:
A. Coefficient of Correlation
B. Coefficient of Skewness
C. Coefficient of Determination
D. Standard error
Correct : C. Coefficient of Determination
3. The value of the correlation coefficient lies between
A. -1 and +1
B. -1 and 0
C. 0 and 1
D. None
Correct : A. -1 and +1
4. A Scatter diagram is considered for measuring
A. Linear relationship between two variables
B. Curvilinear relationship between two variables
C. Neither a or b
D. Both a and b
Correct : D. Both a and b
5. The maximum value of the Rank Correlation coefficient is
A. +1
B. -1
C. 0
D. None of these
Correct : A. +1
6. What is the purpose of a simple linear regression?
A. To predict scores on a dependent variable from scores on a single independent variable
B. To predict scores on an independent variable from scores on multiple dependent variables
C. To predict scores on a dependent variable from scores on multiple independent variables
D. None of Above
Correct : A. To predict scores on a dependent variable from scores on a single independent variable
7. If r is the simple correlation coefficient, the quantity 𝑟2 is known as ...................
A. Coefficient of determination
B. Coefficient of non-determination
C. Coefficient of alienation
D. None of these
Correct : A. Coefficient of determination
8. Asimpleindexnumberis anumberthatmeasures arelativechangein ?
A. group of variable with respect to a base
B. single variable with respect to a base
C. Both A &B
D. None of theabove
Correct : B. single variable with respect to a base
9. Which index number is called as ideal index number.
A. Lasperys
B. Paasches
C. Fisher
D. None of Above
Correct : C. Fisher
10. Secular trend can be measured by:
A. Two methods
B. Three methods
C. Four methods
D. Five methods
Correct : C. Four methods
11. Fishers price index number is the -------
A. A.M. of Lasperys and Paasches.
B. G.M. of Lasperys and Paasches.
C. Difference between Lasperys and Paasches
D. None of the above.
Correct : B. G.M. of Lasperys and Paasches.
12. Relative Method is further divided into how many types?
A. One
B. two
C. None of the above
D. All of the Above.
Correct : B. two
13. In Price Index Numbers prices can either be ?
A. Retail
B. wholesale
C. Both I and II
D. None of the above.
Correct : C. Both I and II
14. While computing a weighted index, the current period quantities are used in the:
A. Laspeyre's method
B. Paasche's method
C. Marshall Edgeworth method
D. Fisher's ideal method
Correct : B. Paasche's method
15. ………….is a point of reference in comparing various data describing individual behaviour.
A. Sample
B. Base period
C. Estimation
D. None
Correct : B. Base period
16. Wheat crops badly damaged on account of rains is:
A. Cyclical movement
B. Random movement
C. Secular trend
D. Seasonal movement
Correct : B. Random movement
17. A complete business cycle consists of a period of:
A. Prosperity
B. Recession
C. Both prosperity and recession
D. none of the above
Correct : C. Both prosperity and recession
18. Which of the following can’t be a component for a time series plot?
A. Seasonality
B. Trend
C. Cyclical
D. Noise
E. None of the above
Correct : E. None of the above
19. The additive and multiplicative time series models are:
A. Y = T + S + C + I and Y = TSCI respectively
B. Y = TSCI and Y = T + S + C + I
C. none of these
D. all
Correct : A. Y = T + S + C + I and Y = TSCI respectively
20. Value of b in the trend line Y = a + bX is:
A. Always positive
B. Always negative
C. Both positive or negative
D. None of these
Correct : C. Both positive or negative
21. In a straight line equation Y = a + bX; a and b are respectively:
A. X-intercept and slope
B. Y intercept and slope
C. can't determined
D. all
Correct : B. Y intercept and slope
22. A time series consists of:
A. Short-term variations
B. Irregular variations
C. Long-term variations
D. All of the above
Correct : D. All of the above