SChand CLASS 9 Chapter 15 Mean, Median and Frequency Polygon Exercise 15(C)

 Exercise 15 C

Question 1

Sol:(IMAGE TO BE ADDED)

Now plot the points $(15,10),(25,25)(35,12),(45,8)$ and $(55,5)$ on the graph and join them and complete the frequency polygon as shown: 

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Question 2

Ans:(IMAGE TO BE ADDED)

Now plot the points $(5,31,(15,7),(25,6),(35,12)$ and $(45,5)$ on the graph and Join them and complete the. frequency polygon as shown.

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Question 3

Ans: (IMAGE TO BE ADDED)

Now plot the points $(25,7),(35,3),(45,5),(55,2)$ and $(65,5)$ on the graph and Join them and complete the frequency polygon as shown.

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Question 4

Sol: Highest length $=?$

Lowest length $=7.4$

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Now plot the points $(2,5,2),(3,5,6),(4,5,8),(5,5,8),(6,5,4)$ and $(7.512)$ on. the graph and Join them and complete the frequency polygon as shown.

(IMAGE TO BE ADDED)

Question 5

Ans:(IMAGE TO BE ADDED)

Represent age along x-axis and no of person on y-axis and complete the histogram. By joining the mid points of each histogram in order we get :

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