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

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 9a.

Other Exercises

Question 1.
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Question 2.
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Question 3.
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Question 4.
Solution:
We have

Question 5.
Solution:
We have

Question 6.
Solution:
We have

Question 7.
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Question 8.
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Question 9.
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Question 10.
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Question 11.
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Question 12.
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Question 13.
Solution:
We have
7+f1+12+f2+8+5=50 ⇒ f2= 18-f1

Question 14.
Solution:

Question 15.
Solution:
We have, Let A = 25 be the assumed mean

Hence mean = 28.

Question 16.
Solution:
Let the assumed mean be 150, h = 20

Hence, Mean = 146.25.

Question 17.
Solution:
Let A = 50 be the assumed mean, we have

Question 18.
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Question 19.
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Question 20.
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Question 21.
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Question 22.
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Question 23.
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Question 24.
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Question 25.
Solution:
Let h = 20 and assume mean = 550, we prepare the table given below:

Hence the mean of the frequency distribution is 544.

Question 26.
Solution:
The given series is an inclusive series, making it an exclusive series, we have

Question 27.
Solution:
The given series is an inclusive series making it an exclusive series,we get

Hence, Mean = 34.87 years.

Question 28.
Solution:

Question 29.
Solution:

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