Cumulative Frequency Polygon And Histogram. 1Convert each frequency to a proportion or relative frequency percent. Right-click on x-axisFormat AxisScale.
Jul 19 2013 Frequency Polygons. On a graph it can be represented by a cumulative frequency polygon where straight lines join up the points or a cumulative frequency curve. The scale on the yaxis uses proportions.
For the frequency polygon the first data point is connected to the midpoint of the previous interval on the X-axis.
To construct a frequency polygon first examine the data and decide on the number of intervals or class intervals to use on the x-axis and y-axis. On a graph it can be represented by a cumulative frequency polygon where straight lines join up the points or a cumulative frequency curve. However frequency polygon can be drawn even without presenting the histogram. It has both a horizontal axis and a vertical axis.
