1. The techniques which provide the decision maker a systematic and powerful means of
analysis to explore policies for achieving predetermined goals are called..........................
Correct : C. Quantitative techniques
2. Correlation analysis is a ..............................
Correct : D. Both b and c
3. If change in one variable results a corresponding change in the other variable, then the
variables are.........................
Correct : A. Correlated
4. When the values of two variables move in the same direction, correlation is said to be
............................
Correct : C. Positive
5. When the values of two variables move in the opposite directions, correlation is said to be
............................
Correct : D. Negative
6. When the amount of change in one variable leads to a constant ratio of change in the
other variable, then correlation is said to be .........................
Correct : A. Linear
7. ...........................attempts to determine the degree of relationship between variables.
Correct : B. Correlation analysis
8. Non-linear correlation is also called.....................................
Correct : B. Curvy linear correlation
9. Scatter diagram is also called ......................
Correct : A. Dot chart
10. If all the points of a scatter diagram lie on a straight line falling from left upper corner to
the right bottom corner, the correlation is called...................
Correct : C. Perfect negative correlation
11. If all the dots of a scatter diagram lie on a straight line falling from left bottom corner to
the right upper corner, the correlation is called..................
Correct : D. Perfect positive correlation
12. Numerical measure of correlation is called .....................
Correct : A. Coefficient of correlation
13. Coefficient of correlation explains:
Correct : B. Relation
14. Coefficient of correlation lies between:
Correct : C. –1 and +1
15. A high degree of +ve correlation between availability of rainfall and weight of weight of
people is:
Correct : D. All of the above
16. If the ratio of change in one variable is equal to the ratio of change in the other variable,
then the correlation is said to be .....................
Correct : A. Linear
17. Pearsonian correlation coefficient if denoted by the symbol ...............
Correct : C. R
18. If r= +1, the correlation is said to be ...................
Correct : C. Perfect +ve correlation
19. If the dots in a scatter diagram fall on a narrow band, it indicates a ....................... degree
of correlation.
Correct : B. High
20. If all the points of a dot chart lie on a straight line vertical to the X-axis, then coefficient
of correlation is ...................
Correct : A. 0
21. If all the points of a dot chart lie on a straight line parallel to the X-axis, it denotes
.................................of correlation.
Correct : D. Absence
22. If dots are lying on a scatter diagram in a haphazard manner, then r = ......................
Correct : A. 0
23. The unit of Coefficient of correlation is ........................
Correct : D. No unit
24. Product moment correlation method is also called ........................
Correct : B. Pearsonian correlation
25. The –ve sign of correlation coefficient between X and Y indicates.............................
Correct : C. Any of the above
26. Coefficient of correlation explains .................... of the relationship between two variables.
Correct : C. Both of the above
27. For perfect correlation, the coefficient of correlation should be ..........................
Correct : A. ± 1
28. Rank correlation coefficient was discovered by....................................
Correct : B. Spearman
29. The rank correlation coefficient is always............................
Correct : D. Between + 1 and – 1
30. Spearman’s Rank Correlation Coefficient is usually denoted by....................
Correct : D. R
31. Probable error is used to:
Correct : A. Test the reliability of correlation coefficient
32. If coefficient of correlation is more than ................of its P E, correlation is significant.
Correct : C. 6 times
33. In correlation analysis, Probable Error = ........................ x 0.6745
Correct : B. Standard error
34. Coefficient of concurrent deviation depends on .......................
Correct : A. The signs of the deviations
35. Correlation analysis between two sets of data only is called....................
Correct : D. Simple correlation
36. Correlation analysis between one dependent variable with one independent variable by
keeping the other independent variables as constant is called......................
Correct : A. Partial correlation
37. Study of correlation among three or more variables simultaneously is called.............
Correct : B. Multiple correlation
38. If r = 0.8, coefficient of determination is.....................................
Correct : C. 64%
39. If r is the simple correlation coefficient, the quantity r2
is known as ...................
Correct : A. Coefficient of determination
40. If r is the simple correlation coefficient, the quantity 1 -- r2
is known as ...................
Correct : B. Coefficient of non-determination
41. The term regression was first used by..........................
Correct : D. Francis Galton
42. ....................refers to analysis of average relationship between two variables to provide
mechanism for prediction.
Correct : B. Regression
43. If there are two variables, there can be at most ........................ number of regression lines.
Correct : B. Two
44. If the regression line is Y on X, then the variable X is known as..........................
Correct : D. All the above
45. Regression line is also called.................................
Correct : D. All the above
46. If the regression line is X on Y, then the variable X is known as..........................
Correct : C. Both a and b
47. If the regression line is X on Y, then the variable X is known as..........................
Correct : A. Dependent variable
48. If the regression line is Y on X, then the variable X is known as..........................
Correct : B. Independent variable
49. The point of intersection of two regression lines is..........................
Correct : D. (x̄ , ӯ)
50. If r = ± 1, the two regression lines are...............................
Correct : A. Coincident
51. If r = 1, the angle between the two regression lines is.........................
Correct : C. Zero degree
52. If r = 0, the two regression lines are:
Correct : C. Perpendicular to each other
53. If bxy and byx are two regression coefficients, they have:
Correct : A. Same signs
54. If byx > 1, then bxy is:
Correct : B. Less than one
55. If X and Y are independent, the value of byx is equal to ........................
Correct : A. Zero
56. The property that both the regression coefficients and correlation coefficient have same
signs is called................................
Correct : C. Signature property
57. The property that byx > 1 implies that bxy < 1 is known as .....................
Correct : B. Magnitude property
58. If X and Y are independent, the property byx = bxy = 0 is called ...................
Correct : D. Independence property
59. The Correlation coefficient between two variables is the ........................... of their
regression coefficients.
Correct : B. Geometric mean
60. If the correlation coefficient between two variables, X and Y, is negative, then the
regression coefficient of Y on X is.............................
Correct : B. Negative
61. The G M of two regression coefficients byx and bxy is equal to ..........................
Correct : A. R
62. If one regression coefficient is negative, the other is ...............................
Correct : B. – ve
63. Arithmetic mean of the two regression coefficients is:
Correct : B. Greater than correlation coefficient
64. byx is the regression coefficient of the regression equation.....................
Correct : A. Y on X
65. bxy is the regression coefficient of the regression equation.....................
Correct : B. X on Y
66. In ..................... regression analysis, only one independent variable is used to explain the
dependent variable.
Correct : C. Linear
67. The regression coefficient and correlation coefficient of the two variables will be the
same if their .............................are same.
Correct : B. Standard deviation
68. The idea of testing of hypothesis was first set forth by ..........................
Correct : B. J Neyman
69. By testing of hypothesis, we mean:
Correct : C. A rule for accepting or rejecting hypothesis
70. Testing of hypothesis and ......................are the two branches of statistical inference.
Correct : D. Estimation
71. ......................... is the original hypothesis
Correct : A. Null hypothesis
72. A null hypothesis is denoted by...........................
Correct : A. H0
73. An alternative hypothesis is denoted by...........................
Correct : B. H1
74. Whether a test is one sided or two sided, depends on........................
Correct : D. Alternative hypothesis
75. A wrong decision about null hypothesis leads to:
Correct : B. Two kinds of errors
76. Power of a test is related to ........................
Correct : B. Type II error
77. Level of significance is the probability of................................
Correct : A. Type I error
78. Which type of error is more severe error:
Correct : B. Type II error
79. Type II error means..............................
Correct : C. Accepting a wrong hypothesis
80. Type I error is denoted by...........................
Correct : A. Alpha
81. Type II error is denoted by....................................
Correct : B. Beta
82. The level of probability of accepting a true null hypothesis is called........................
Correct : C. Level of confidence
83. The probability of rejecting a true null hypothesis is called.......................
Correct : B. Level of significance
84. 1 – Level of confidence =.............................
Correct : A. Level of significance
85. While testing a hypothesis, if level of significance is not mentioned, we take ...................
level of significance.
Correct : C. 5%
86. ...............refers to the number of independent observations which is obtained by
subtracting the number of constraints from the total number of observations.
Correct : B. Degree of freedom
87. Total number of observations – number of constraints =......................
Correct : B. Degree of freedom
88. Accepting a null hypothesis when it is false is called................................
Correct : B. Type II error
89. Accepting a null hypothesis when it is true is called................................
Correct : D. No error
90. When sample is small,....................... test is applied.
Correct : A. t-test
91. To test a hypothesis about proportions of items in a class, the usual test is..............
Correct : B. Z- test
92. Student’s t-test is applicable when:
Correct : D. All the above
93. Testing of hypotheses Ho : μ = 45 vs. H1 : μ > 45 when the population standard deviation
is known, the appropriate test is:
Correct : B. Z test
94. Testing of hypotheses Ho : μ = 85 vs. H1 : μ > 85, is a ...................test.
Correct : B. One sided right tailed test
95. Testing of hypotheses Ho : μ = 65 vs. H1 : μ < 65, is a ...................test.
Correct : A. One sided left tailed test
96. Testing of hypotheses Ho : μ = 65 vs. H1 : μ ≠ 65, is a ...................test.
Correct : C. Two tailed test
97. Student’s t-test was designed by ............................
Correct : D. W S Gosset
98. Z test was designed by ........................................
Correct : A. R A Fisher
99. Z test was designed by .......................................
Correct : A. R A Fisher
100. The range of F ratio is ........................................