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The mean deviation of the data 2, 9, 9, ...

The mean deviation of the data 2, 9, 9, 3, 6, 9, 4 from the mean is :

A

2.23

B

2.57

C

3.23

D

3.57

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The correct Answer is:
B
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HIMALAYA PUBLICATION-STATISTICS MEASURE OF DIPERSION-QUESTION BANK
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  3. A set of n values x(1), x(2), ….., x(n) has standard deviation sigma. ...

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  4. The mean deviation of the data 3, 10, 10, 4, 7, 10, 5 from the mean is...

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  8. The standard deviation of the data 6, 5, 9, 13, 12, 8, 10 is :

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  10. The mean of 100 observations is 50 and their standard deviation is 5. ...

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  13. Let x(1), x(2), x(3), x(4), x(5) be the observations with mean m and s...

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  14. Standard deviations for first 10 natural numbers is :

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  15. Consider the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. If 1 is added to e...

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  16. The following information relates to a sample of size 60 : sum x^(2) =...

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  17. Coefficients of variation of two distributions are 50 and 60, and thei...

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