Summarising and interpreting data, the normal distribution, and bivariate analysis with a line of best fit.
These are the statements the Mathematics Standard 2 syllabus makes about Strand: Statistical Analysis. Dux records each one against the questions you answer, so you can see which of them you have actually been tested on and which have never been asked.
Measures of centre and spread, and why the median is preferred for skewed data. Choosing the right summary is a judgement, not a formula.
Scatterplots, correlation and the line of best fit, including interpolation versus extrapolation and what correlation does not establish.
The 68–95–99.7 rule, z-scores and standardising, used to compare scores drawn from different distributions.
Reading a graph critically: truncated axes, misleading scales, and summary statistics chosen to support a conclusion rather than describe the data.
Random and biased samples, question wording, and the difference between a sample statistic and the population value it estimates.
HSC Mathematics Standard 2 - Trial Paper Shape is 100 marks in 150 minutes. Questions on Strand: Statistical Analysis are not one shape repeated: the command word decides what the marker is looking for, and the mark value decides how much of it. These are the ones Mathematics Standard 2 uses.
Dux writes practice for this module in exactly these shapes, so the drill is the same task the paper sets — not a general knowledge quiz with the module name on it.
Strand: Statistical Analysis is module 4 of 6 in Mathematics Standard 2. Students routinely lose marks because a question spans two modules, so the neighbouring modules are worth reading next to this one.
Dux diagnoses Mathematics Standard 2 dot point by dot point, then writes questions in the shape this course marks. Written answers come back marked against the bands.