1. It measures the extent to which the items scatter from average.
A. Variation
B. Skewness
C. Kurtosis
D. None of the above
2. Variation is also known as
A. Spread
B. Scatter
C. Dispersion
D. All of the above
3. Which characteristics of data which provide useful information for data
A. Variation
B. Skewness
C. Kurtosis
D. All of the above
4. Variation is related to the ……………… of the data.
A. Heterogeneity
B. Homogeneity
C. Both (a) and (b)
D. Neither (a) nor (b)
5. If earnings are widely scattered (extremely high to low or even negative) it indicates a …………….. risk to investors.
A. Zero
B. Low
C. High
D. None of the above
6. Variation is useful to study the degree of …………………. in different data sets
A. Uniformity
B. Consistency
C. Both (a) and (b)
D. Neither (a) nor (b)
7. Which of the following is a characteristic of Variation?
A. It is related to the homogeneity of the data.
B. It measures the extent to which the items scatter from average.
C. An average is more meaningful when the data are examined in the light of variation
D. All of the above
8. Which analytical devices in statistics are based on the measure of variation?
A. Hypothesis testing
B. Cost control
C. Analysis of fluctuations
D. All of the above
9. Why is Variation significant?
A. It judges the reliability of an average
B. It compares series with regard to their variability
C. It provides a basis for the control of variability itself
D. All of the above
10. Which of the following is not true for variation?
A. It judges the reliability of an average
B. It provides a basis for the control of variability itself
C. It does not compare series with regard to their variability
D. None of the above
11. Measures of absolute variation are expressed in terms of the ………….. units of the given data
A. Different
B. Original
C. Both (a) and (b)
D. Neither (a) nor (b)
12. Variation may be measured in
A. Absolute terms
B. Relative terms
C. Both (a) and (b)
D. Neither (a) nor (b)
13. Which of the following is true statement for Range?
A. It is greatly affected by extreme values of the data.
B. It cannot be computed in case of open-ended distribution
C. It is the simplest measure of variation
D. All of the above
14. In case the two set of data are expressed in different units or in different sizes, which measures of variation should be used?
A. Relative
B. Absolute
C. Both (a) and (b)
D. Neither (a) nor (b)
15. It is the arithmetic mean of absolute difference between the items in a distribution and the average of that distribution.
A. Quartile Deviation
B. Standard Deviation
C. Mean
D. Deviation
16. Mean deviation can be computed from
A. Mean
B. Median
C. Mode
D. All of the above
17. It is defined as the difference between the highest value and the lowest value of observation in a set of data.
A. Range
B. Standard deviation
C. Quartile Deviation
D. Mean Deviation
18. It is the square root of the arithmetic mean of the squares of deviations from arithmatic mean of given distribution
A. Mean deviation
B. Standard deviation
C. Quartile deviation
D. None of the above
19. Which of the following is a measure of variation?
A. Range
B. Standard deviation
C. Mean deviation
D. All of the above
20. The square of the standard deviation is called
A. Mean Deviation
B. Skewness
C. Variance
D. Kurtosis