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A random survey of the number of children of various age groups playing in a park was found as follows:

Draw a histogram to represent the data above.

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Learn Exercise 14.3

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Here, it can be observed that the data has class intervals of varying width. The proportion of children per 1 year interval can be calculated as follows. Age (in years) Frequency (Number of children) Width of class Length of rectangle 1 − 2 5 1 2 − 3 3 1 3 − 5 6 2 ...
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Here, it can be observed that the data has class intervals of varying width. The proportion of children per 1 year interval can be calculated as follows.

Age (in years) Frequency (Number of children) Width of class
Length of rectangle
1 − 2 5 1  
2 − 3 3 1  
3 − 5 6 2  
5 − 7 12 2  
7 − 10 9 3  
10 − 15 10 5  
15 − 17 4 2  

Taking the age of children on x-axis and proportion of children per 1 year interval on y-axis, the histogram can be drawn as follows.

 

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