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Prove that the standard deviation from t...

Prove that the standard deviation from two values `x_1` and `x_2` of a variable x is equal to half their differences

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A N EXCEL PUBLICATION-STATISTICS-QUESTION BANK
  1. Find the mean deviation about the median for the following data:

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  2. Find the mean deviation about the median for the following data:

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  3. Prove that the standard deviation from two values x1 and x2 of a varia...

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  4. Calculate S.D. Of the following numbers 9,7,5,11,1,5,7,3

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  5. A student obtained the mean and standard deviation of 100 observations...

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  6. Find the standard deviation for the following distribution :

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  7. Find the standard deviation from the following frequency distribution:

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  8. Find the mean and variance for the following data 6,7,10,12,13,4,8,12

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  9. Find the mean and variance of first n natural numbers.

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  10. Find the mean and variance of the first 10 multiples of 3.

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  11. Find the mean and variance of following data :

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  12. Find the mean and variance of following data :

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  13. Find the mean and variance of following data :

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  14. Find the mean and variance of following data :

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  15. From the data given below which group is more variable A or B?

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  16. From the prices of shares x and y below find out which is more stable ...

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  17. An analysis of monthly wages paid to workers in two firms A and B bel...

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  18. An analysis of monthly wages paid to workers in two firm A and B belo...

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  19. The following is the record of goals scored by team A in a football se...

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  20. The sum and sum of squares corresponding to length x(incm) and weight ...

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