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

Draw a histogram to represent the data above. 

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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.  

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

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