Question 1019248
a distribution of scores might be 20% for each increment of 1.


your table would look like this:


<pre>


x          distribution of x          cumulative distribution of x.


1               20%                          20%
2               20%                          40%
3               20%                          60%
4               20%                          80%
5               20%                          100%
</pre>


the cumulative distribution includes all the previous distributions as well.


here's a refeence.


<a href = "http://stattrek.com/statistics/charts/cumulative-plot.aspx" target = "_blank">http://stattrek.com/statistics/charts/cumulative-plot.aspx</a>


here's a definition of cumulative by merriam webster.


http://www.merriam-webster.com/dictionary/cumulative


cumulative comes from accumulate.


when your next interval adds the data from the previous interval, then you have cumulative data.


the following excel output shows the tablel and graph of a distribution and its cumulative distribution.


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