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Find the variance and standard deviation for the following distribution: X:, 4.5, 14.5, 24.5, 34.5, 44.5, 54.5, 64.5 `f:` , 1, 5, 12, 22, 17, 9, 4

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RD SHARMA ENGLISH-STATISTICS-All Questions
  1. Find the mean of the following frequency distribution: Variable (xi)...

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  2. Calculate the variance and standard deviation from the data given b...

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

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  4. Find the standard deviation for the following data: (i) x : , 3, 8, 13...

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  5. Calculate the mean and standard deviation for the following distrib...

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  6. Let x1, x2, ,xn be xn observations. Let yi=a xi+b for i=1,2,...,n wher...

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  7. For a frequency distribution standard deviation is computed by applyin...

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  8. The mean of 100 numbers observations is 50 and their standards devia...

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  9. If n=10 , X =12 and sumx(i)^2=1530 , then the coefficient of variati...

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  10. Life of bulbs produced by two factories A and B are given below: Le...

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  11. If the standard deviation of a variable X \ is \ sigma , then standard...

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  12. Following are the marks obtained, out of 100, by two students Ravi and...

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  13. Let a, b, c, d, e, be the observations with m and standard deviation s...

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  14. The lengths (in cm) of 10 rods in a shop are given below: 40.0,52.3,55...

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  15. If the S.D. of a set of observations is 8 and if each observation is ...

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  16. The standard deviation of the observations 6,5,9,13,12,8,10 is 6 (b) ...

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  17. The standard deviation of first 10 natural numbers is ...

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  18. The mean deviation of the data 3,10,10,4,7,10,5 (a) 2 (b) 2.57(c)3 (d)...

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  19. The mean deviation from e median is (a) equal to that measured from an...

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  20. The weight of coffee in 70 jars is shown in the following table: We...

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