A year 10 unit of work covering the following topics:
(1) Questionnaires: Designing questionnaires. Criticising questions. Hypotheses.
(2) Sampling: Simple random sampling. Systematic sampling. Stratified sampling.
(3) Frequency Polygons: Drawing frequency polygons. Interpreting frequency polygons.
(4) Box and Whisker Diagrams: Drawing box and whisker diagrams. The connection between box and whisker diagrams and cumulative frequency diagrams.
(5) Comparing Averages: Revising averages. Choosing the most appropriate average. Comparing averages.
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