If the standard deviation of a population is 10, what would be the population variance?
A sequence a, ax, ax2, ......, axn, has odd number of terms. Then the median is
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The mean of a distribution is 15 and the standard deviation is 5. What is the value of the coefficient variation?
If the standard deviation of a population is 3, what would be the population variance?
The variance of a set of data is 169. Then the standard deviation of the data is
The mean of 20 observations is 19. One more observation is included and the new mean becomes 20. The 21st observation is
The mean of a distribution is 18 and the standard deviation is 4.5. What is the value of the coefficient of variation?
The mean of the data 2, 9, 9, 3, 6, 9, 4 is
The variance of a set of data is 121. Then the standard deviation of the data is
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