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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 12 students in an examination (out of 50) are given below: 18, 35, 2, 27, 40, 0, 21, 33, 27, 8, 36, 23 Find the mean marks.

. Find the median of the given data: 9, 7, 12, 16, 8, 11, 16, 13, 10

. Find the median of the given data: 8, 9, 12, 7, 5, 4, 18, 20, 6,3

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.

Find the median of : 16, 9, 11, 23, 7, 5, 12, 14, 8, 10, 21

Find the median of : 25, 18, 13, 20, 16, 9, 22, 8, 6, 15, 21, 11, 17

Find the mode of the following data in each case: 14, 25, 14, 28, 18, 17, 18, 14, 23, 22, 14, 18 7, 9, 12, 13, 7, 12, 15, 7, 12, 7, 25, 18, 7

Find the mean deviation about the mean for the following data :12, 3, 18, 17, 4, 9, 17, 19, 20, 15, 8, 17, 2, 3, 16, 11, 3, 1, 0, 5

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 ENGLISH-TABULAR REPRESENTATION OF STATISTICAL DATA -All Questions
  1. Form a grouped frequency distribution from the following data by in...

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  2. The maximum temperature (in degrees celcius) and relative humidity (in...

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

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  4. The weights in grams of 50 oranges picked at random from a consignm...

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

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

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

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  8. What do you understand by the word “statistics” in (i) singular form...

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  9. Describe some fundamental characteristic of statistics.

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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 ...

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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 particula...

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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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