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AQA GCSE · Question 09.3 · Data Collection and Sampling Methods
Give a reason for choosing one of the other options (A, B, or C). State which option you choose.
Give a reason for choosing one of the other options (A, B, or C). State which option you choose.
How to approach this question
Think about why using *all* data (Option D) might sometimes be misleading. Do people's abilities stay the same over time? Which options would better reflect a player's current form?
Full Answer
Option: A (or B or C)
Reason: This data is more recent and may better reflect his current skill level or form. His ability might have changed over time, so older data (included in D) may no longer be relevant.
While Option D provides the most data, it assumes that Paul's probability of winning has been constant throughout his entire playing history. This is unlikely to be true. Players improve with practice or may decline in skill. Therefore, choosing a more recent dataset like **Option A (last 5 games)** or **Option B (last 20 games)** could provide a more valid estimate of his *current* form and his chances of winning his *next* game. The older data from years ago might not be relevant anymore.
Common mistakes
✗ Choosing an option without giving a valid reason.\n✗ Giving a reason that contradicts the choice (e.g., choosing A and saying "it has more data").
Practice the full AQA GCSE Statistics Higher Tier Paper 2
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