Thursday, August 7, 2008

Histogram


The histogram is a graphical way to display frequencies of scores. Basically, the data is collected and is then subdivided into bin widths of equal range. The number of scores to fall into each bin width is counted, and the frequencies are then graphed.. As with any statistical graph, with a large enough sample size the graph should reflect a normal distribution; therefore, if the graph does not look like a normal bell curve there may be some significant reason behind it.

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