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A Presentation by Alex Coates and Peter Charley

Alexandre Coates

on 20 April 2010

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Transcript of Histograms

Histograms By Alex Coates and Peter Charley A 10 minute presentation So what are Histograms? short answer; fancy bar charts ? But there are some differences... In a plain bar chart the groups are all the same width... like so: Unfortunately this doesn't work for everything For example if some of the sample sizes are different Instead of a bar chart you now use a Histogram A Histogram is a slight variation on a bar chart that can display data that is spread over a variety of ranges To start with you need to know the frequency of the data : The next step is to look at the range of the data...
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