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mathematicsprinted 159 · PDF 160
165 pagesrevision 46935
printed 159 · PDF 160
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Figure 1: Histogram
is 75%, follow the same process but find the midpoint between the median and
the maximum value on the y-axis of the graph. When asked to draw such a graph,
always use crosses and join the points with a smooth curve.
6 Histograms
Histograms represent the frequency for each of the range. One important thing
about histogram is the frequency density - this would always form the x-axis
and is calculated as:
D =fW(6)
Where f is the frequency of the range and W is the class width which is the
difference between the upper and lower bounds of a class. Finally, here’s what a
histogram looks.