Here is the URL for a presentation on the chi-squared test.
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There are many more mathematical visual aids to project onto a whiteboard or screen in our Shine+Write area and, though it is not a big part of the Transum website, there are more presentations on the PowerPoint page.
Transum,
Saturday, October 12, 2019
"This is not meant to be a comprehensive study of this topic, which is left to the textbooks and other online sources. This presentation can also be used as a revision resource for those who have already studied this topic in more detail. One notion that should be stressed is that of having a ‘feel’ for the data and making a guess at the result before the calculator is used."
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