Counting and introductory statistics — Topic Review | Year 11

QUICK RECAP

Connect the ideas

Decide whether order matters before selecting a counting method.

State whether repetition is allowed and whether items are distinguishable.

Describe the population and sampling method before drawing a conclusion.

Use a centre and spread together; check shape and unusual values.

For this chapter, quartiles use the median-of-halves convention, excluding an odd sample median.

Use sample standard deviation with denominator n−1 when estimating population spread.

A normal model is continuous and symmetric; empirical-rule percentages are approximations.

Complete each paper and show your working.

Counting and statistics — Practice test 1
10 questions · 45 marks · 60 minutes · Scientific calculator
Begin with counting choices, then analyse a small survey and an introductory normal model. Show formulas and explain your choices.
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Counting and statistics — Practice test 2
10 questions · 50 marks · 65 minutes · Technology-assisted
Apply restrictions, work from a frequency table and compare distributions. Normal cumulative values are supplied where needed.
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Counting and statistics — Applications test 3
10 questions · 52 marks · 70 minutes · Technology-assisted
Use counting and statistics to plan an event and judge operational data. State what each calculation counts and qualify the conclusions.
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Counting and statistics — Reasoning test 4
10 questions · 51 marks · 70 minutes · Technology-assisted
Explain methods, reverse calculations and challenge misleading conclusions. Supplied normal values may be used without further tables.
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Counting and statistics — Consolidation test 5
10 questions · 54 marks · 75 minutes · Technology-assisted
Connect counting, sampling and data summaries to a quality-control decision. Explain model assumptions and support comparisons numerically.
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