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Find the variance and standard deviation...

Find the variance and standard deviation for each of the data:
8,9,11,13,14,15,21

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KUMAR PRAKASHAN-STATISTICS-PRACTICE WORK
  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. Find the variance and standard deviation for each of the data: 8,9...

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  4. Find the variance and standard deviation for each of the data: 65....

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  5. Find the variance and standard deviation for each of the data: 10,...

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  6. Find the variance and standard deviation for each of the data: 20,...

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  7. Find the variance for each of the following

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  8. Find the variance for each of the following

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  9. Find the variance for each of the following

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  10. Find the mean and standard deviation for the following frequency distr...

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  11. Find the mean and standard deviation for the following frequency distr...

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  12. Find the mean and standard deviation for the following frequency distr...

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  13. Find the mean and standard deviation for the following frequency distr...

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  14. The runs made by two players A and B in three test match series are a...

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  15. The prices of shares A and B are given below: Which share has ...

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  16. An analysis of monthly wagis paid to worker in two parts. A anb B of f...

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  17. The mean and variance of eight observation are 9 and 9.25, respectivel...

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  18. The mean and standard deviation of a group of 200 candidates are 40 a...

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  19. prove that if the variance of the observations x1,x2,x3,…….,xn is sigm...

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  20. There are 60 students in a class . The following is the frequency dist...

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