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Does a histogram always have to have the separated intervals on the x axis? For example, I know that histograms show frequency of things arranged in intervals. But when you make the graph, do the intervals have to be on the x axis?
Yes, For a histogram, the upper limit of class intervals must be equal to the lower limit of the next class interval.
While drawing a histogram frequencies to be on the Y- axis and the intervals on the X - axis.


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