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Calculate the variance and standard devi...

Calculate the variance and standard deviation from the data given below: Size of item, 3.5, 4.5, 5.5, 6.5, 7.5, 8.5, 9.5 Frequency , 3, 7, 22, 60, 85, 32, 8

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RD SHARMA ENGLISH-STATISTICS-All Questions
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  5. Find the standard deviation for the following data: (i) x : , 3, 8, 13...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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