basic statistics Mcqs
51. ______________is based on all observations of data?
comments icon0

A. Median

B. Mean

C. None of these

D. Mode

52. Which mean is most effected by extreme values?
comments icon0

A. HM

B. Median

C. AM

D. GM

53. Suppose for 40 observations, the variance is 50. If all the observations are increased by 20, the variance of these increased observation will be______________?
comments icon0

A. 50/20

B. 70

C. 50

D. 50-20 = 30

E. 50

54. Mean Deviation, Variance and Standard Deviation of the values 4, 4, 4, 4, 4, 4 is_________________?
comments icon0

A. 8

B. 2

C. 12

D. 0

E. 4

55. If any of the value in data set is negative then it is impossible to compute:_____________?
comments icon0

A. Arithmetic Mean

B. Median

C. Harmonic Mean

D. Geometric Mean

E. Mode

56. In a frequency distribution the last cumulative frequency is 300, Median shall lie in____________?
comments icon0

A. 130th item

B. 150th item

C. 140th item

D. 160th item

57. Proportion becomes percentage when multiplied by___________?
comments icon0

A. 10-Jan

B. 100

C. 1/1000

D. 1/100

58. Statistics are ___________ expressed?
comments icon0

A. Qualitatively

B. Ability

C. Quantitatively

D. Descriptive

59. A characteristics that does not change is called______________?
comments icon0
A. Constant

B. Attribute

C. None of these

D. variable

60. Continuous variable can assume __________ value?
comments icon0

A. Constant

B. Specific

C. All possible

D. Accuracy

61. The average monthly production of a factory for the first 8 months is 2,500 units, and for the next 4 months the production was 1,200 units. The average monthly production of the year will be_____________?
comments icon0

A. 4021.12 units

B. 5031.10 units

C. 3012.11 units

D. 2066.55 units
62. If X and Y are independent then SD (X ? Y) is________________?
comments icon0

A. SD(X)?SD(Y)

B. Var(X)+Var(Y)????????????????

C. If Y=?8X ? 5 and SD of X is 3, then SD of Y is

D. SD(X)+SD(Y)

E. SD(X)+SD(Y)???????????????

63. If the standard deviation of a population is 9, the population variance is_____________?
comments icon0

A. 21

B. 81

C. 9

D. 3

64. The weights of students in a college/school is a___________?
comments icon0

A. None of these

B. Continuous Variable

C. Qualitative Variable

D. Discrete Variable

65. The data collected by NADRA to issue National Identity cards are______________?
comments icon0

A. Official data

B. Primary data

C. Secondary data

D. un-official data

66. Given the N values in a series, the geometric mean is______________?
comments icon0

A. The square root of the product of N values

B. The fourth root of the product of N values

C. The Nth root of the product of N values

D. The third root of the product of N values

67. In a distribution of 10, 20, 30, 40, 50, the x is 30, the sum of deviations from x will be:________?
comments icon0

A. 30

B. 15

C. 60

D. Zero
68. The middle value of an ordered array of numbers is the____________?
comments icon0

A. Mean

B. Median

C. Mid Point

D. Mode

69. According to the empirical rule, approximately what percent of the data should lie within ???
comments icon0
A. 95%

B. 90%

C. 75%

D. 99.70%

70. A contractor employs 20 male, 15 female and 5 children in his factory. Male wages are Rs. 10 per day, female Rs. 8 per day, and children Rs. 3 per day. The weighted x of wages paid per day will be_____________?
comments icon0

A. 10.63

B. 3.86

C. 9.21

D. 8.37
71. Village Patwari collecting the data about cotton crops is the example of_____________?
comments icon0

A. Constant

B. Primary data

C. Secondary data

D. variable

72. Statistics Laws are true________________?
comments icon0

A. In each case

B. Average

C. Facts

D. Field

73. Life of a T.V picture tube is a:___________?
comments icon0

A. Qualitative variable

B. Constant

C. Continuous variable

D. Discrete variable

74. In statistics, conducting a survey means_____________?
comments icon0

A. Drawing graphs and pictures

B. Making mathematical calculations

C. None of the above

D. Collecting information from elements
75. The number of accidents in a city during 2012 is____________?
comments icon0

A. Constant

B. Continuous variable

C. Discrete variable

D. Qualitative variable

76. The calculation of mean and variance is based on______________?
comments icon0

A. Extreme values only

B. All values

C. Small values only

D. Large values only

77. The height of a student is 60 inches. This is an example of________________?
comments icon0

A. Qualitative data

B. Discrete data

C. Categorical data

D. Continuous data
78. Which of these represent qualitative data______________?
comments icon0
A. Liking or disliking of (500) persons of a product

B. Height of a student

C. Income of a government servant in a city

D. Yield from a wheat plot

79. Which of the following is not based on all the observations ?
comments icon0

A. Geometric Mean

B. Mode

C. Weighted Mean

D. Arithmetic Mean

E. Harmonic Mean

80. The Harmonic Mean of any two numbers is________________?
comments icon0

A. a+b

B. ab???

C. a+b2

D. 2aba+b
81. If a distribution is abnormally tall and peaked, then is can be said that the distribution is_____________?
comments icon0

A. Pyrokurtic

B. Mesokurtic

C. Platykurtic

D. Leptokurtic
82. Founder of statistics is_________?
comments icon0
A. Karl pearson

B. Neyman

C. Smith

D. R A Fisher

83. Lowest value of variance can be________________?
comments icon0

A. 1

B. 3

C. 0

D. -1

E. -3

84. Most of the recent developments in statistics arose to meet the needs of ____________?
comments icon0

A. Three reasons

B. Biology

C. Hands

D. Physics

85. Standard deviation is calculated from the Harmonic Mean (HM) ________________?
comments icon0

A. Sometimes

B. Always

C. Never

D. None of these

86. Which of the following divides a group of data into four subgroups?
comments icon0

A. Deciles

B. Standard Deviation

C. Quartiles

D. Median

E. Percentiles

87. Statistics has handicap dealing with_____________?
comments icon0

A. Constant

B. Quantitative data

C. Qualitative data

D. Variable

88. A parameter is a measure which is computed from___________?
comments icon0

A. None of these

B. Sample data

C. Population data

D. Test statistics

89. A numerical value calculated from sample is called____________?
comments icon0

A. Economics

B. Statistic

C. Mathematics

D. None of these

90. _________ statistics deals with collection, presentation and analysis of data?
comments icon0
A. Descriptive

B. Collection

C. Inferential

D. Two

91. For a certain distribution if ?(x?2)=18,?(x?24)=0,?(x?28)=?24) then arithmetic mean is_______________?
comments icon0

A. 28

B. 24

C. 21

D. 0

92. Dependence of difference on statistics is for_______________?
comments icon0
A. Three reasons

B. Natural Sciences

C. Two reasons

D. Short run

93. The mean of a constant b is_________________?
comments icon0
A. b

B. Zero

C. None

94. The grouped data is also called_____________?
comments icon0
A. Secondary data

B. Primary data

C. Qualitative data

D. Raw data

95. If mean is 25 and standard deviation is 5 then C.V (Coefficient of variation) is_______________?
comments icon0
A. 20%

B. None of these

C. 25%

D. 100%

96. The mean of a distribution is 23, the median is 24, and the mode is 25.5. It is most likely that this distribution is_____________?
comments icon0

A. Symmetrical

B. Negatively Skewed

C. Positively Skewed

D. Asymptotic

97. If x is 4 and the distribution is 2, 3, 4, 5, 6, the sum of squared deviations from the x will be______________?
comments icon0
A. 10

B. 12

C. 8

D. 6

98. Variance remains unchanged by change of________________?
comments icon0

A. Scale

B. None of these

C. Origin

D. Both

99. Primary data and _____________ data are same?
comments icon0
A. Ungrouped

B. Secondary data

C. None of these

D. Grouped

100. _________ used the word statistics for the first time during one of his lectures at a German university?
comments icon0

A. unavoidable

B. Fisher

C. Achenwall

D. Feet