RS Aggarwal Solutions Class 10 Chapter 9 Mean, Median, Mode of Grouped Data, Cumulative Frequency Graph and O give Ex 9c

These Solutions are part of RS Aggarwal Solutions Class 10. Here we have given RS Aggarwal Solutions Class 10 Chapter 9 Mean, Median, Mode of Grouped Data, Cumulative Frequency Graph and O give Ex 9c.

Other Exercises

Question 1.
Solution:
RS Aggarwal Solutions Class 10 Chapter 9 Mean, Median, Mode of Grouped Data Ex 9c 1

Question 2.
Solution:
RS Aggarwal Solutions Class 10 Chapter 9 Mean, Median, Mode of Grouped Data Ex 9c 2

Question 3.
Solution:
RS Aggarwal Solutions Class 10 Chapter 9 Mean, Median, Mode of Grouped Data Ex 9c 3

Question 4.
Solution:
As the class 26 – 30 has maximum frequency so it is modal class
RS Aggarwal Solutions Class 10 Chapter 9 Mean, Median, Mode of Grouped Data Ex 9c 4

Hence, mode = 28.5.

Question 5.
Solution:
As the class 1500 – 2000 has maximum frequency, so it os modal class

RS Aggarwal Solutions Class 10 Chapter 9 Mean, Median, Mode of Grouped Data Ex 9c 5
Hence the average expenditure done by maximum number of workers = Rs. 1820.

Question 6.
Solution:
As the class 5000 – 10000 has maximum frequency, so it is modal class
RS Aggarwal Solutions Class 10 Chapter 9 Mean, Median, Mode of Grouped Data Ex 9c 6

Hence, mode = Rs. 7727.27.

Question 7.
Solution:
As the class 15 – 20 has maximum frequency so it is modal class.
RS Aggarwal Solutions Class 10 Chapter 9 Mean, Median, Mode of Grouped Data Ex 9c 7

Hence mode = 17.3 years.

Question 8.
Solution:
As the class 85 – 95 has the maximum frequency it is modal class
RS Aggarwal Solutions Class 10 Chapter 9 Mean, Median, Mode of Grouped Data Ex 9c 8
Hence, mode = 85.71.

Question 9.
Solution:
The given series is converted from inclusive to exclusive form and on preparing the frequency table, we get

Class

Frequency

0.5 – 5.5

5.5- 10.5

10.5 – 15. 5

15.5 – 20.5

20.5 – 25. 5

25.5 – 30.5

30.5 – 35.5

35.5 – 40.5

40.5 – 45.5

45.5 – 50.5

3

8

13

18

28

20

13

8

6

3

As the class 20.5 – 25.5 has maximum frequency, so it is modal class
RS Aggarwal Solutions Class 10 Chapter 9 Mean, Median, Mode of Grouped Data Ex 9c 9
Hence, mode = 23.28.

Question 10.
Solution:
RS Aggarwal Solutions Class 10 Chapter 9 Mean, Median, Mode of Grouped Data Ex 9c 10

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