Business Statistics Paper 4

1

The first three moments of a distribution about the mean X are 1, 4 and 0. The distribution is:






2

For a positively skewed distribution, mean is always:






3

The second and fourth moments about mean are 4 and 48 respectively, then the distribution is:






4

The measures used to calculate the variation present among the observations in the unit of the variable is called:






5

The measure of dispersion which uses only two observations is called:






6

Half of the difference between upper and lower quartiles is called:






7

The mean deviation of the scores 12, 15, 18 is:






8

The variance is zero only if all observations are the:






9

The standard deviation of -5, -5, -5, -5, 5 is:






10

Bowley’s coefficient of skewness lies between:






Result

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