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Calculate the mean and standard deviatio...

Calculate the mean and standard deviation for the following distribution: Marks:, 20-30, 30-40, 40-50, 50-60, 60-70, 70-80, 80-90 No. of students:, 3, 6, 13, 15, 14, 5, 4

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Compute mean deviation from mean of the following distribution: Marks 10-20 20-30 30-40 40-50 50-60 60-70 70-80 80-90 No. of students 8 10 15 2 20 18 9 5

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Calculate the mean and standard deviation for the following table given the age distribution of a group of people: Age: 20-30 30-40 40-50 50-60 60-70 70-80 80-90 No. of persons: 3 51 122 141 130 51 2

Calculate the mean and standard deviation for the following table given the age distribution of a group of people: Age: 20-30 30-40 40-50 50-60 60-70 70-80 80-90 No. of persons: 3 51 122 141 130 51 2

Find the mean deviation about the mean for the following data: Marks obtained , 10-20, 20-30, 30-40, 40-50, 50-60, 60-70, 70-80 Number of students, 2, 3, 8, 14, 8, 3, 2

Compute D3 for the following distribution : {:("Marks",0-10,10-20,20-30,30-40,40-50,50-60,60-70,70-80,),("No.of students",3,10,17,7,6,4,2,1,):}

Calculate the mean deviation from the median of the following data: Wages per week (in Rs.), 10-20, 20-30, 30-40, 40-50, 50-60, 60-70, 70-80 No. of workers, 4, 6, 10, 20, 10, 6, 4

Calculate the median deviation from the median of the following data: Wages per week (in Rs.), 10-20, 20-30, 30-40, 40-50, 50-60, 60-70, 70-80 No. of workers, 4, 6, 10, 20, 10, 6, 4

The modal class for the following frequency distribution, is {:("Marks:", 0-10,10-20,20-40,40-50,50-60,60-70,70-90,90-100),("No. of students:",4,6,14,16,14,8,16,5):}

Find the mean deviation about the mean for the following data: Marks obtained 10-20 20-30 30-40 40-50 50-60 60-70 70-80 Number of students 2 3 8 14 8 3 2

RD SHARMA ENGLISH-STATISTICS-All Questions
  1. Find the variance and standard deviation for the following distribu...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  19. Find the mean and variance of frequency distribution given below: x...

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  20. While calculating eh mean and variance of 10 readings, a student wr...

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