Business Statistics

Q 11. Standard deviation is always computed from

(A) Mean
(B) Median
(C) Mode
(D) geometric mean
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Q 12. The coefficient of variation cannot be meaningfully used to compare the variability of two or more sets of data, when

(A) The standard deviation is zero for one or more sets of data
(B) The standard deviation is 1 for one or more sets of data
(C) The mean is zero for one or more sets of data
(D) The mean is 1 for one or more sets of data
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Q 13. For a symmetrical distribution Q1=25, Q3=45, the median is

(A) 20
(B) 25
(C) 35
(D) None of these
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Q 14. Following are the Relative measures of dispersion except

(A) Co-efficient of Mean deviation
(B) Standard deviation
(C) Co-efficient of Range
(D) Co-efficient of Quartile deviation
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Q 15. The degree of peaked ness or flatness of a unimodal distribution is called:

(A) Skewness
(B) Kurtosis
(C) Dispersion
(D) Normal distribution
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Q 16. If the values of mean, median and mode coincide in a unimodal distribution, then the distribution will be:

(A) Positively Skewed
(B) Symmetrical
(C) Negatively Skewed
(D) None of these
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Q 17. In order to compare two series we can use

(A) Coefficient of Variation
(B) Standard deviation
(C) Coefficient of Skewness
(D) Coefficient of kurtosis
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Q 18. The standard deviation is independent of:

(A) Change of scale
(B) Change of origin
(C) Change of origin and scale
(D) None of these
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Q 19. Which of the following is a unit free measure of dispersion:

(A) Range
(B) Standard deviation
(C) Interquartile range
(D) Coefficient of range
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Q 20. The mean deviation is minimum when deviations are taken from:

(A) Mean
(B) Median
(C) Mode
(D) None of these
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