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Normal Plots

FYI...

Normally I Wouldn't Reveal the Plot...

  The normal probability plot (sometimes called a quantile plot) is a useful tool for determining the normality of a dataset. The article Normally I Wouldn't Reveal the Plot ... introduces the normal plot, discusses why it is a valuable tool in your arsenal of graphical displays and gives you a recipe for making your very own plot.

Normal plots are not mentioned in the Mathematics A, B or C syllabus. However they are a valuable tool for determining if a dataset is normal, which is one of the assumptions on which the t-test is based. At a minimum a student studying the Probability and Statistics optional unit in Mathematics C should be able to interpret a normal plot, and preferably understand how to construct one.

| Read Me First! | Introduction | Acknowledgements |
| Looking for Patterns |Stemplots | Dotplots | Histograms |
| Measures of Location | Measures of Spread |
| Boxplots | Normal Plots | Scatterplots |

| Assessment | Datasets | Resources |
| VISITOR'S BOOK | SEARCH | HOME |

| Linear Regression | Normal Distribution |
| Probability | Sampling | Confidence Intervals |
| Hypothesis Testing | Non Linear Regression |