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The mean and standard deviation of 6 obs...

The mean and standard deviation of 6 observations are 8 and 4, respectively. If each observation is multiplied by 3, find the new mean and new standard deviation of the resulting observations.

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MODERN PUBLICATION-STATISTICS-EXERCISE
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  2. The mean and variance of 7 observations are 8 and 16 respectively. If ...

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  3. The mean and standard deviation of 6 observations are 8 and 4, respect...

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  4. Calculate the standard deviation of the following frequency distributi...

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  7. Calculate the standard deviation of the following distribution :

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  8. Calculate the mean and standard deviation for the following distributi...

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  9. Calculate the mean and standard deviation for the following distributi...

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  10. Calculate the mean and standard deviation for the following distributi...

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  11. Calculate the mean and standard deviation for the following distributi...

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  14. In a study of patients, following data are obtained. Find the arithmet...

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  15. Calculate the mean and variance of the following data :

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  17. Calculate the mean and variance of the following data :

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  18. Calculate the mean and variance of the following distribution :

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  19. Calculate the mean and standard deviation of the distribution :

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