statistics MCQs – Page 53

Practise multiple-choice questions from statistics for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

statistics Mcqs

1. sample linear regression 2. normal distribution 3. presentation of data 4. statistical inference 5. measures of location 6. basic statistics 7. correlation and regression 8. sampling 9. binomial and hyper geometric probability 10. index number 11. hypothesis testing 12. measures of dispersion

1041. Which mean is most effected by extreme values?
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A. HM

B. Median

C. AM

D. GM

1042. Suppose for 40 observations, the variance is 50. If all the observations are increased by 20, the variance of these increased observation will be______________?
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A. 50/20

B. 70

C. 50

D. 50-20 = 30

E. 50

1043. Mean Deviation, Variance and Standard Deviation of the values 4, 4, 4, 4, 4, 4 is_________________?
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A. 8

B. 2

C. 12

D. 0

E. 4

1044. If any of the value in data set is negative then it is impossible to compute:_____________?
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A. Arithmetic Mean

B. Median

C. Harmonic Mean

D. Geometric Mean

E. Mode

1045. In a frequency distribution the last cumulative frequency is 300, Median shall lie in____________?
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A. 130th item

B. 150th item

C. 140th item

D. 160th item

1046. Proportion becomes percentage when multiplied by___________?
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A. 10-Jan

B. 100

C. 1/1000

D. 1/100

1047. Statistics are ___________ expressed?
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A. Qualitatively

B. Ability

C. Quantitatively

D. Descriptive

1048. A characteristics that does not change is called______________?
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A. Constant

B. Attribute

C. None of these

D. variable

1049. Continuous variable can assume __________ value?
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A. Constant

B. Specific

C. All possible

D. Accuracy

1050. 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_____________?
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A. 4021.12 units

B. 5031.10 units

C. 3012.11 units

D. 2066.55 units

1051. If X and Y are independent then SD (X ? Y) is________________?
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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)???????????????

1052. If the standard deviation of a population is 9, the population variance is_____________?
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A. 21

B. 81

C. 9

D. 3

1053. The weights of students in a college/school is a___________?
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A. None of these

B. Continuous Variable

C. Qualitative Variable

D. Discrete Variable

1054. The data collected by NADRA to issue National Identity cards are______________?
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A. Official data

B. Primary data

C. Secondary data

D. un-official data

1055. Given the N values in a series, the geometric mean is______________?
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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

1056. In a distribution of 10, 20, 30, 40, 50, the x is 30, the sum of deviations from x will be:________?
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A. 30

B. 15

C. 60

D. Zero

1057. The middle value of an ordered array of numbers is the____________?
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A. Mean

B. Median

C. Mid Point

D. Mode

1058. According to the empirical rule, approximately what percent of the data should lie within ???
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A. 95%

B. 90%

C. 75%

D. 99.70%

1059. 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_____________?
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A. 10.63

B. 3.86

C. 9.21

D. 8.37

1060. Village Patwari collecting the data about cotton crops is the example of_____________?
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A. Constant

B. Primary data

C. Secondary data

D. variable

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