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. Programming techniques are generally known as ...................................
Correct : B. mathematical techniques
3. .................................is the reverse process of differentiation
Correct : B. integration
4. .............................. is a powerful device developed over the matrix algebra.
Correct : C. determinants
5. Correlation analysis is a........................... analysis.
Correct : D. queuing theory
6. When the values of two variables move in the same direction, correlation is said to be ..........
Correct : A. positive
7. When the values of two variables move in the opposite direction, correlation is said to be……
Correct : B. negative
8. When the amount of change in one variable leads to a constant ratio of change in the other
variable, correlation is said to be ............................
Correct : C. linear
9. Scatter diagram is also called ...................................
Correct : B. zero correlation
10. If all the points of a scatter diagram lie on a straight line falling from the lower left-hand corner to
the upper right-hand corner, the correlation is said to be ..........................
Correct : B. perfect positive correlation
11. If all the dots of a scatter diagram lie on a straight line falling from the upper left-hand corner to
the lower right hand corner, the correlation is said to be ..........................
Correct : C. perfect negative correlation
12. The quantitative measure of correlation between two variables is known as.....................
Correct : A. coefficient of correlation
13. Coefficient of correlation measures ...........................................
Correct : D. relation
14. Coefficient of correlation lies between .....................................
Correct : C. +1 and -1
15. Karl Pearson’s coefficient of correlation is denoted by the symbol ..................
Correct : B. r
16. Correlation can be ............................................
Correct : C. between +1 and -1
17. If r= +1, the correlation is said to be .......................
Correct : A. perfectly positive correlation
18. An analysis of the covariance between two or more variables is called ..............................
Correct : B. correlation analysis
19. In correlation analysis, P.E. = ....................0.6745
Correct : A. standard error
20. If correlation between the two variables is unity , there exists ........................................
Correct : D. perfect correlation
21. In correlation analysis, the formulae 1-r2 is used to compute the value of .......................
Correct : B. coefficient of non-determination
22. Study of correlation between two sets of data only is called ..............................
Correct : B. simple correlation
23. ………..is the study of correlation between one dependent variable with one independent variable by
keeping the other independent variables as constant.
Correct : C. partial correlation
24. ……….is the study of correlation among three or more variable simultaneously.
Correct : A. multiple correlation
25. In a correlation analysis, if r=0, then we may say that, there is ..................... between variables.
Correct : A. no correlation
26. Coefficient of correlation is independent of ........................................
Correct : C. both
27. When r = -1, we may say that, there is ..........................
Correct : A. perfect negative correlation
28. If the ratio of change in one variable is equal to the ratio of change in the other variable, the
correlation is said to be ..................................
Correct : A. linear
29. If the plotted points of a scatter diagram fall on a narrow band, it indicates a. ............degree of
correlation.
Correct : C. high
30. If r =0.9, coefficient of determination is .........................
Correct : C. absence
31. If plotted points in a scatter diagram lie on a straight line vertical to the Y-axis, then r=.........
Correct : B. 0
32. ................................is the geometric mean of two regression coefficients.
Correct : A. coefficient of correlation
33. If dots in a scatter diagram are lie in a haphazard manner, then r= .......................
Correct : A. 0
34. Product moment correlation was developed by .......................
Correct : A. karl pearson
35. Spearman’s coefficient of correlation is usually denoted by .................
Correct : C. r
36. If m is the coefficient of correlation, then the value of m2 is known as .................
Correct : B. coefficient of determination
37. If m is the correlation coefficient, then the quantity (1-m2) is called ......................
Correct : B. coefficient of non-determination
38. The coefficient of correlation between two variables, X and Y , will have negative sign when……
Correct : C. any one of the above
39. Coefficient of concurrent deviation depends on ..........................
Correct : B. direction of deviation
40. ............................ refers to analysis of average relationship between two variables to provide a
mechanism for prediction.
Correct : B. regression
41. The two regression lines coincide each other when r = .......................
Correct : C. +1
42. The two regression lines are mutually perpendicular when r = ..............
Correct : A. 0
43. byx is the regression coefficient of regression equation ...........................
Correct : A. y on x
44. The signs of regression coefficients will be .......................
Correct : B. same
45. The signs of correlation coefficient and regression coefficient are ............................
Correct : B. same
46. Scatter diagram of the various values of ( X, Y) gives the idea about .......................
Correct : C. functional relationship
47. If X and Y are independent , the value of regression coefficient byx = ....................
Correct : B. 0
48. bxy x byx = ..............................
Correct : C. both
49. If X and Y are two variables, there can be at most ..........................
Correct : B. two regression lines
50. Geometric mean of regression coefficients will be ..............................
Correct : A. coefficient of correlation
51. In a regression line of Y on X, the variable X is known as ..................................
Correct : D. all the above
52. The term regression was used firstly by .............................
Correct : C. 0
53. If a constant 30 is subtracted from each of the value of X and Y , the regression coefficient is
..........................
Correct : C. not changed
54. In .........................regression, only one independent variable is used to explain the dependent
variable.
Correct : A. linear
55. Regression lines are also called .........................
Correct : C. scatter diagram
56. If the correlation between the two variables , X and Y is negative, the regression coefficient of
Y on X is .............................
Correct : C. negative
57. The arithmetic mean of bxy and byx is ..........................
Correct : B. greater than r
58. The regression coefficient and correlation coefficient of two variables will be the same, if their
.................... are same.
Correct : A. standard deviation
59. If the sign of regression coefficient bxy is negative, then the sign of regression coefficient byx will
be ........................
Correct : B. negative
60. The square root of coefficient of determination is ...................
Correct : A. coefficient of correlation
61. While analysing the relationship between variables, independent variable is also
called..................................
Correct : B. explanatory variable
62. Dependent variable is also called ............................
Correct : A. explained variable
63. If one regression coefficient is positive, the other is .......................
Correct : A. positive
64. The arithmetic mean of bxy and byx is .............................
Correct : C. greater than r
65. .............................. refers to the chance of happening or not happening of an event.
Correct : B. probability
66. The numerical value given to the likelyhood of the occurrence of an event is called................
Correct : C. probability
67. Sample point is also called .........................
Correct : B. elementary outcome
68. The result of a random experiment is called .................................
Correct : B. event
69. ............................ has two or more outcomes which vary in an unpredictable manner from trial to trial
when conducted under uniform conditions.
Correct : B. random experiment
70. An event whose occurrence is inevitable is called ......................................
Correct : A. sure event
71. An event whose occurrence is impossible, is called ......................
Correct : A. sure event
72. An event whose occurrence is neither sure nor impossible, is called ...........................
Correct : C. uncertain event
73. A set of events are said to be ...................... , if the occurrence of one of them excludes the
possibility of the occurrence of the other.
Correct : A. mutually exclusive
74. ....................... refers to the arrangement of objects in a definite order.
Correct : B. permutation
75. Selection of objects without considering their order is called ...................................
Correct : A. combination
76. Classical probability is also called .........................
Correct : D. none of these
77. The relative frequency approach is also called ................................
Correct : D. all the above
78. When P(AUB) = P(A) + P(B), then A and B are .............................
Correct : C. mutually exclusive
79. When two events cannot occur together is called ........................
Correct : B. mutually exclusive
80. If two sets have no common element, they are called ....................
Correct : C. disjoint set
81. Two events are said to be ..................... , if any one of them cannot be expected to occur in
preference to the other.
Correct : A. equally likely
82. Two events are said to be independent if ........................
Correct : D. one does not affect the occurrence of the other
83. Probability of an event lies between ................................
Correct : B. 0 and 1
84. Probability of sample space of a random experiment is ............................
Correct : C. +1
85. In tossing a coin , getting head and getting tail are ............................................
Correct : A. mutually exclusive events
86. If two events, A and B are mutually exclusive, then P(AUB) = .........................
Correct : A. p(a) + p(b)
87. If two events, A and B are not mutually exclusive, the P(AUB) = ..................
Correct : B. p(a) + p(b) - p(a and b)
88. An event consisting of those elements which are not in the given event is called.............
Correct : C. complementary event
89. The definition of priori probability was originally given by ............................
Correct : B. laplace
90. ........................ refers to the totality of all the elementary outcomes of a random experiment.
Correct : B. sample space
91. The sum of probabilities of all possible elementary outcomes of a random experiment is
always equal to ...................
Correct : B. 1
92. Chance for an event may be expressed as .................
Correct : D. none of these
93. If it is known that an event A has occurred, the probability of an event B given A is called
............................
Correct : B. conditional probability
94. The mean of a binomial distribution is ...........................
Correct : A. np
95. Binomial distribution is a ................................ probability distribution
Correct : A. discrete
96. Binomial distribution is originated by ..................................
Correct : C. james bernoulli
97. When probability is revised on the basis of all the available information, it is called .............
Correct : B. posterior probability
98. Baye’s theorem is based upon inverse probability.
Correct : A. yes
99. Probability distribution is also called theoretical distribution.
Correct : A. yes
100. The height of persons in a country is a .......................... random variable.