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The marks obtained by 40 students of class IX in an examination are given below: 18, 8, 12, 6, 8, 16, 12, 5, 23, 2, 16, 23, 2, 10, 20, 12, 9, 7, 6, 5, 3, 5, 13, 21, 13, 15, 20, 24, 1, 7, 21, 16, 13, 18, 23, 7, 3, 18, 17, 16 Present the data in the form of a frequency distribution using the same class size, one such class being 15-20 (where 20 is not included)

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The marks obtained by 40 students of class VIII in an examination are given below: 18,8,12,0,8,16,12,5,23,2,16,23,2,10,20,12,9,7,6,5,3,5, 13,21,13,15,20,24,1,7,21,16,13,18,23,7,3,18,17,16 Present the data in the form of a frequency distribution using the same class size, one such class being 15-20 (where 20 is not included).

The marks obtained by 40 students of class IX in an examination are given below 18,8,12,6,8,16,12,5,23,2,16,23,2,10,20,12,9,7,6,5,3,5,13,21,13,15,20,24,1,7,21,16,13,18,23,7,3,18,17,16. Present the data in the form of a frequency distribution using the same class size,one such cliess being 15-20 (where 20 is not included)

The marks obtained by 12 students of a class in a test are 36, 27, 5, 19, 34, 23, 37, 23, 16, 23, 20, 38. Find mode.

The marks obtained by 40 students of class VIII in an examination are given below: 16,17,18,3,7,23,18,13,10,21,7,1,13,21,13,15,19,24,16,3, 23,5,12,18,8,12,6,8,16,5,3,5,0,7,9,12,20,10,2,23 Divide the data into five groups, namely 0-5, 5-10, 10-15, 15-20 and 20-25 and prepare a grouped frequency table.

The marks obtained (out of 20) by 30 students of a class in a test are as follows: 14, 16, 15, 11, 15, 14, 13, 16, 8, 10, 7, 11, 18, 15, 14, 19, 20, 7, 10, 13, 12, 14, 15, 13, 16, 17, 14, 11, 10, 20. Prepare a frequency distribution table for the above data using class intervals of equal width in which one class interval is 4-8 (excluding 8 and including 4).

Let the marks obtained by 30 students of a class in a test be 38, 26, 4, 32, 20, 22, 11, 47, 12, 23, 8, 2, 10, 8, 12, 17, 2, 19, 16, 42, 40, 13, 47, 38, 17, 27, 30, 6, 23, 18. Arrange the data in grouped frequency distribution, using groups 0-10, 10-20 e tc.

Find the standard deviation for the following data: (i) x : , 3, 8, 13, 18, 23 f: , 7, 10, 15, 10, 6 (ii) x : , 2, 3, 4, 5, 6, 7, 7 f: , 4, 9, 16, 14, 11, 6, 6

RD SHARMA-TABULAR REPRESENTATION OF STATISTICAL DATA -All Questions
  1. The water tax bills (in rupees) of 30 hours in a locality are given...

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  2. Form a grouped frequency distribution from the following data by inc...

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  3. The marks obtained by 40 students of class IX in an examination are...

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  4. The class marks of a distribution are: 17,52,57,62,67,72,77,82,87,9...

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  5. For the following data of daily wages (in rupees0 received by 30 la...

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  6. The class marks of a distribution are 26,31,36,41,46,51,56,61,66,71....

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  7. What do you understand by the word “statistics” in singular form   ...

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  8. Describe some fundamental characteristic of statistics.

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  9. What are (i) primary data? (ii) secondary data? Which of the two -- th...

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  10. Why do we group data?

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  11. Explain the meaning of the following terms: variate         (ii)  ...

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  12. The ages of ten students of a group are given below: The ages have b...

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  13. The monthly pocket money of six friends is given below: Rs. 45, Rs....

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  14. Write the class-size in each of the following: 0-4,5-9,10-14 10-19,...

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  15. The final marks in mathematics of 30 students are as follows: 53,61...

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  16. The weights of new born babies (in kg) in a hospital on a particular...

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  17. The number of runs scored by a cricket player in 25 innings are as ...

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  18. The class size of a distribution is 25 and the first class-interval...

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  19. Write the class size and class limits in each of the following: 104,...

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  20. Following data gives the number of children in 40 families: 1,2,6,5...

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