SL 4.3—Summary statistics Topic Practice
SL 4.3—Summary statistics Topic Practice
Students practise estimating mean and standard deviation from grouped data, interpreting spread comparatively, and solving for unknown frequencies using mean equations.
How this is tested
- estimate mean using mid-interval values and frequency totals in grouped data tables
- calculate sample standard deviation sₙ₋₁ from raw or tabulated data, distinguishing it from population σ
- interpret relative spread by comparing standard deviations across two data sets in context