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Year 7 Probability and statistics WA7MPSP2 4 pages · 34 questions Core
Year 7 Chance Experiments and Relative Frequency Worksheet
Free Year 7 chance experiments worksheet (WA7MPSP2): relative frequency, expected results and comparing with theory. With marking key.
What's covered
- Calculating relative frequency from experiment results
- Predicting expected results from a probability
- Comparing experimental and theoretical probability
About this worksheet
This free Year 7 relative frequency worksheet is written for the Western Australian curriculum and mapped to SCSA content description WA7MPSP2. It targets one skill so students can practise until it sticks: by the end, students can say “I can conduct chance experiments, calculate relative frequencies and compare them with theoretical probabilities.”
What’s inside
- Key idea box – a short explanation with worked examples to read before starting.
- A · Fluency (16 questions) – quick practice to build accuracy.
- B · Core (10 questions) – worded problems set in everyday Australian contexts.
- C · Reasoning (4 questions) – explain, justify and spot the error.
- D · Challenge (4 questions) – harder multi-step and problem-solving questions for students ready to stretch.
- Separate marking key – every answer with working, plus mark allocations and marking criteria for reasoning questions.
Skills covered
- Calculating relative frequency from experiment results
- Predicting expected results from a probability
- Comparing experimental and theoretical probability
How to use this worksheet
Start with the Key idea box, then complete Section A without a calculator. Most students should attempt Sections B and C; Section D suits students aiming for the top of the class or preparing for accelerated or extension maths. The worksheet is marked out of 55, and the score box on the last page helps students see which section needs more practice.
Common mistakes to watch for
- Dividing by the wrong total
- Expecting results to match the theory exactly
- Thinking a small number of trials is enough
- Believing past results change the next outcome
Where this fits in the WA Year 7 sequence
Chance Experiments and Relative Frequency sits in the Probability and statistics strand. It is one of a set of short, single-skill EduLift worksheets that split each Year 7 content description into sub-skills. Use the previous and next links to work through the sequence in order.
Common errors we see in tutoring
- Dividing by the wrong total
- Expecting results to match the theory exactly
- Thinking a small number of trials is enough
- Believing past results change the next outcome
Answer key (with worked solutions)
The answer key is a separate PDF with every question worked, not just the final answers.
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