51. Non-random sampling is also called___________________?
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A. Representative sampling

B. Biased sampling

C. Non-prob.sampling

D. Less than sampling

52. Experiment in which outcomes vary from trial to trial _________________?
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A. Random experiment

B. Variable

C. Experiment

D. Non of these

53. Standard deviation is calculated from the Harmonic Mean (HM) ________________?
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A. Sometimes

B. None of these

C. Never

D. Always

54. For a symmetrical distribution approximately 68% of the cases are included between _________________?
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A. X?3S and X+3S

B. None of these

C. X?S and X+S

D. X?2S and X+2S

55. Which of the following is not an example of a discrete probability distribution ?
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A. Non of these

B. Whether or no t a home has a swimming pool in it.

C. The number of bedrooms in a house

D. The sale or purchase price of a house

56. In descriptive statistics, we study______________?
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A. None of the above

B. How to describe the probability distribution

C. The methods for organizing, displaying, and describing data

D. The description of decision making process

57. There are ____________ probability sampling?
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A. Four

B. Six

C. Seven

D. Three

58. Which of the following is impossible in sampling ?
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A. None of these

B. Destructive tests

C. To make voters lists

D. Heterogeneous data

59. Random numbers are also called__________________?
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A. Random digits

B. random Errors

C. Random experiment

D. None of these

60. Total Area under the curve in probability of density function is ?
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A. 0

B. Infinity

C. 1

D. -1

61. Mean Deviation, Variance and Standard Deviation of the values 4, 4, 4, 4, 4, 4 is_________________?
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A. 8

B. 12

C. 2

D. 0

E. 4

62. The mathematical exception of x + y is equal to ________________?
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A. E(x) + E(y)

B. E(x + x)

C. E(y)

D. E(x + 0)

63. Eyes color of employees is the example of____________?
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A. Attribute

B. Constant variable

C. Discrete variable

D. Continuous variable

64. N n/N -1 is called ___________ population?
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A. Group

B. Un-finite

C. Finite

D. Correction

65. A fair coin toss the total events in sample space equal_____________?
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A. 36

B. 16

C. 6

D. 7

66. If E(x) is the expected value of X then E[x E(x)]= ___________________?
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A. 0

B. E(X) 0

C. E(x) E(x)

D. E(x) + E(x)

67. The calculation of mean and variance is based on______________?
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A. All values

B. Large values only

C. Small values only

D. Extreme values only

68. Which of these is a relative measure of dispersion_____________?
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A. Standard Deviation

B. Variance

C. Coefficient of Variation

D. None of these

69. The special rule of multiplication of probability, the events must be ______________?
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A. Empirical

B. Bayesian

C. Independent

D. Mutually exclusive

70. If (AB) >(A) (B)/n __________ then A and B are?
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A. Associated

B. Dis-associated

C. Independent

D. None of these

71. The mean of 10 numbers is 9, then sum of these numbers will be__________________?
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A. 9

B. 0.9

C. 70

D. 90
72. Correlation coefficient is _________ of origin and unit of measurement?
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A. Independence

B. Origin

C. None

D. Dependence

73. Data regarding opinions of consumers about some product obtained through lady workers are ____________?
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A. Secondary

B. Cheapest method

C. Existing Sources

D. Primary

74. Which branch of statistics deals with the techniques that are used to organize, summarize, and present the data?
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A. Advanced Statistics

B. Descriptive Statistics

C. Inferential Statistics

D. Bayesian Statistics

E. Probability Statistics

75. If a & b are constants, then Var (a + bX) equal to_________________?
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A. None of these

B. b2 Var(X)

C. b Var(x)

D. Var(bX) + a

76. If in a coin P(H) = 2P(T) then prob. of head is ______________?
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A. 2-Jan

B. 0

C. 2/3

D. 3-Jan

77. A sampling distribution is the probability distribution for which one of the following___________?
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A. A population

B. A sample statistic

C. A population parameter

D. A sample

78. A?B means:_______________?
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A. None of these

B. The elements of A and B

C. The elements of A or B

D. The elements A but not of B

79. A function probability that a random variable of x has a value less than is called _____________?
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A. Distribution function

B. Random function

C. probability function

D. Continuous function

80. (A ? C) is a frequency of attributes of order_______________?
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B. -2

C. 3

D. 1

81. The regression co-efficient are _________ origin?
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A. Scale

B. Dependent

C. Both

D. Independent
82. The two regression co-efficient always have the __________ sign?
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A. Same

B. None of these

C. #NAME?

D. Different

83. Statistical Laws are valid in the ________________?
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A. Plural sense

B. Long run

C. Short run

D. indefinite

84. If all values are same then the measure of dispersion will be________________?
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A. 0

B. 1

C. Mode

D. Median

E. Mean

85. when a three die rolled the sample space consists of _____________?
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A. Non of these

B. 24 outcomes

C. 216 outcomes

D. 6 outcomes

86. In a week the prices of a bag of rice were 350 ,280, 340, 290, 320, 310, 300. The range is_____________?
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A. 90

B. 70

C. 100

D. 60

87. Addition Law of probability for mutually exclusive event is equal _______________?
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A. P(AUB)=P(A) + (B)

B. P(A?B) = P(A). P(B

C. P(A?B) = P(A) + P(B) + P(A?B)

D. P(AUB) = P(A) + P(B) P(A?B)

88. In special rule of addition of probability, the events are Always:_______________?
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A. Bayesian

B. Mutually Exclusive events

C. Empirical

D. Independent events

89. If the events have same chance of occurrence they are called:_______________?
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A. dependent events

B. Mutually Exhaustive events

C. Exhaustive events

D. Equally likely events
90. Coefficient of variation (C.V) is given below:_________________?
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A. Mean/S.D. x 100

B. Mean/S.D.

C. . S.D./Mean x 100

D. S.D./Mean

91. The table representing two attributes is called________________?
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A. Dichotomy table

B. Chi-square table

C. Contingency table

D. Random table

92. Which one is the not measure of dispersion?
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A. Inter-Quartile Range

B. 50th Percentile

C. Variance

D. The Range

93. A box containing 12 balls of color 6 red and 6 white. A ball of white selected ball finds the probability of white____________?
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A. 12-Apr

B. 6/12

C. 12-Jul

D. 12-Dec

94. Statistic is a numerical quantity, which is calculated from?
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A. Observations

B. Sample

C. Data

D. Population

95. The probability of a save event is equal to _________________?
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A. One

B. Two

C. Three

D. Four

96. Statistics laws are true for______________?
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A. Short run

B. None of these

C. Medium period

D. Long run
97. The probability function is always______________?
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A. Negative

B. Positive

C. None

D. Non Negative
98. For distribution Function F(X),F(-?)=0 and F(?)= ?
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A. 1

B. Non of These

C. -1

D. 0

99. The probability of drawing same number on two dice if two dice are thrown _________________?
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A. Dec-36

B. Jan-36

C. 18/36

D. Jun-36

100. The probability of drawing a diamond card out of 52 cards is ______________?
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A. 13/52

B. 0

C. Apr-52

D. 2-Jan