Statistics
General
This material was updated at the start of 2025 for the Time Series and Bivariate standards.St John's still does the Systems of Equations and Linear Programming in its Statistics course, despite them officially being no longer in the Statistics strand.
Equations
When I first started teaching this was an external. This material is taken from that time.Practice 1 Practice 2 Practice 3
Practice 4 Practice 5 Practice 6
Worksheets with a couple of exercises at each level.
This is quite a good explanation of the process for solving 3 x 3 equations by hand from http://www.slideshare.net.
Extension work
Linear Programming
These too are taken from old examples when it used to be an external.Practice 1 Practice 2
Practice 3 Practice 4
Worksheets, with an Achieved example first, followed by a Merit/Excellence example. The later ones are harder.
Bivariate Data
This topic has changed quite a bit in the last few years, most especially in terms of the types of data given and the applications for producing the graphs, so care needs to be taken with this older material. That said, the underlying Maths hasn't changed.Notes and Worksheet Answers
The scope of the old unit, with spaces for questions, and the same but with answers.
The original for the worksheet can be found at http://www.stat.auckland.ac.nz/~teachers/2003/regression.php along with other resources.
Crackers! Life Expectancy
Annotated model answers. The age of the data and the differences in graphing applications are not important.
Time Series
Time Series Notes zip of .ppt filesThree sets of PowerPoint slides. The first goes through the process of analysing the data in Excel, which is now very much out of date new. The next two look at some extension areas such as indexing and multiplicative models, which still have some relevance.
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Model answers, the first with annotations. The data is old, but that does not affect the analysis.