1) Mean deviation, Variance and Standard Deviation of the values 4,4,4,4,4,4 is_______________? a. 4 b. 8 c. 2 d. 0
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2) The variance of 5 numbers is 10. If each number is divided by 2, then variance of new number is_____________? a. 20 b. 0 c. 2.5 d. 0
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3) The mean deviation of the values, 18, 12, 15, is_______________? a. 6 b. Zero c. 3 d. 2
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4) Lowest value of variance can be____________? a. 1 b. -1 c. 3 d. 0
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5) If the standard deviation of the values 2,4,6,8 is 2.33, then the standard deviation of the values 4,6,8,10 is_____________? a. 0 b. 2.58 c. 4.66 d. 2.33
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6) If Y=-8X – 5 and SD of X is 3, then SD of Y is______________? a. 8 b. 3 c. 24 d. None of these
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7) Variance remains unchanged by change of_____________? a. Origin b. Scale c. Both d. None of these
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8) If all values are same then the measure of dispersion will be? a. 1 b. 0 c. Mean d. Mode e. Median
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9) The shape of the symmetrical distribution is _______? a. U- Shaped b. J- Shaped c. Bell- Shaped d. None of these
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10) The sum of absolute deviations from median is _____? a. Zero b. Positive c. Least d. None of these
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