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Shape & Skew
Concept · 4 steps · NESA MA4-DAT-C-02

Analysing Datasets and Drawing Conclusions

This is the payoff for everything else in the unit. You've got the averages and the graphs — now the real skill is reading a pile of data, sizing it up by centre, spread and shape, and saying something fair about it without getting fooled.


1Where it comes fromTwo classes, two dot plots. Same average can hide a totally different story. 2How to do itDescribe any dataset by centre, spread and shape — then write a fair conclusion. 3Where it gets trickyTiny samples, one stat out of context, and "it happened together so it caused it". 4Out in the wildPick the better option from real data — and work out what data you'd even need.