Statistics

Extended revision

Bring together comparisons, box plots, two-way tables and sampling.

Histograms, scatter plots and misleading displays

Frequency density and fitted lines I · Extension

Optional extension: Frequency density, interpolation and fitted lines

Histograms, scatter plots and fitted lines

Data Display Reasoning

Two-way tables and relative frequency

Grouped frequencies and weighted spread I · Extension

Optional extension: Unknown frequencies, grouped estimates and weighted spread

Missing frequencies and two-way tables

Frequency Reasoning

Read the five-number summary

Quartiles, IQR and the middle half

Compare distributions and identify outliers

Sample variation and evidence

Stratified and capture–recapture samples I · Extension

Optional extension: Stratification, capture–recapture and sample precision

Samples, estimates and non-response

Evaluating Surveys

Combined means and variance I · Extension

Optional extension: Combined means, variance and missing observations

Combined means and missing values

Distribution Reasoning