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Calculate mean, variance and standard de...

Calculate mean, variance and standard deviation of the following frequency distribution: Class 1-10 10-20 20-30 30-40 40-50 0-60 Frequency: 11 29 18 4 5 3

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RD SHARMA ENGLISH-STATISTICS-All Questions
  1. The mean and standard deviation of 100 observations were calculated as...

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

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

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

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

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

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

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

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  9. Two plants A and B of a factory show following results about the numbe...

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  10. find the mean salary of 60 workers of a factory from the given table

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  11. The means and standard deviations of heights ans weights of 50 student...

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  12. The means and standard deviations of heights ans weights of 50 student...

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  13. Coefficient of variation of two distributions are 60% and 70% and thei...

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  14. Calculate coefficient of variation from the following data: Income ...

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  15. An analysis of the weekly wages paid to workers in two firms A and B, ...

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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. The mean and standard deviation of marks obtained by 50 students of a ...

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  18. Find the coefficient of variation for the following data: Size (in ...

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  19. The variance of first n natural number is:

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  20. If the sum of the squares of deviations for 10 observations taken from...

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