bivariate statistics
The first 3.50 mins of this video shows how to construct scatter plots and get least squares regression line. It then looks at finding r and r squared.
Remember: that we tend to insert the stats page into a new calc page just because it gives you a bit more room (rather than in the spreadsheet as they do here). At about 5.50 mins the video has a good summary of constructing residual plots. |
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This video gives a detailed explanation on how to construct a 3 median line - including splitting into appropriate groups. Be warned it does moves VERY slowly but she explains very clearly. Just jump forward as required.
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