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Demonstrate the usefulness of drawing a cumulative frequency curve.
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Question 1 Demonstrate the usefulness of drawing a cumulative frequency curve. (30 marks) A cumulative frequency curve (also known as an ogive) is a graphical representation of the number of items that have values that are either above or below a given level. It is also described as the running total of all the given frequencies. In order to illustrate this curve, one must start off by drawing a graph that places the cumulative frequency values along a vertical line, or Y-axis, while placing the intervals on the horizontal line, or X-axis. Then the appropriate points from the data are then plotted on this graph, and these points are connected by a single line to form the cumulative frequency curve. Cumulative frequencies are also used by marketers to have a record of sales with respect to other factors such as prices, product variants, et cetera. For example, a marketer launching a new...
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