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The mean and variance of eight observati...

The mean and variance of eight observations are 9 and 9.25, respectively. If six of the observations are 6, 7, 10, 12, 12 and 13, find the remaining two observations.

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RD SHARMA ENGLISH-STATISTICS-All Questions
  1. The mean of 5 observations is 4.4 and their variance is 8.24. If three...

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  2. The mean and standard deviation of six observations are 8 and 4, re...

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  3. The mean and variance of eight observations are 9 and 9.25, respect...

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  4. For a group of 200 candidates, mean was found to 40 but it was discove...

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  5. The mean and standard deviation of 100 observations were calculated as...

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  6. The mean and standard deviation of 20 observations are found to be 1...

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  7. The mean and standard deviation of a group of 100 observations were...

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  8. Show that the two formulae for the standard deviation of ungrouped d...

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  9. Find the variance and standard deviation for the following distribu...

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  10. Table below shows the frequency f with which x alpha particles were ra...

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  11. Calculate the mean and S.D for the following data: Expenditure (in...

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  12. Calculate the standard deviation for the following data: Class 0-...

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  13. The mean and standard deviation of 100 observations were calculated as...

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  14. Calculate the mean, median and standard deviation of the following ...

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  15. Calculate mean, variance and standard deviation of the following fr...

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

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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. The following values are calculated in respect  of heights and weights...

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  19. If the heights of 5 persons are 140 cm, 150cm,158cm, 152 cm and 161 cm...

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  20. The sum and sum of squares corresponding to length x (in cm) and weigh...

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