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Question
Draw a histogram for the following data:
Class interval600−640640−680680−720720−760760−800800−840Frequency184515328817163
Using this histogram, draw the frequency polygon on the same graph
Draw a histogram for the following data:
Class interval600−640640−680680−720720−760760−800800−840Frequency184515328817163
Using this histogram, draw the frequency polygon on the same graph
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Solution
Sol:
Take class intervals along the y-axis and draw rectangles of width equal to the size of class intervals and height equal to their corresponding frequencies. Thus we get the required histogram.
Take imaginary class intervals 560-600 at the beginning and 840-880 at the end, each with frequency zero.
Now join the mid points of the top of the rectangles to get the required frequency polygon.
Sol:
Take class intervals along the y-axis and draw rectangles of width equal to the size of class intervals and height equal to their corresponding frequencies. Thus we get the required histogram.
Take imaginary class intervals 560-600 at the beginning and 840-880 at the end, each with frequency zero.
Now join the mid points of the top of the rectangles to get the required frequency polygon.
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