TEACHER-GUIDE-VERIFIED · TG-V9-059

8. A small sample shows 6 of 8 events with a pattern; a large sample shows 63 of 90. Compare rates and identify the more reliable estimate.

Verified solution

Solution: Small=75%; large=70%. The 70% estimate is generally more stable because n=90 is larger.

Source: Teacher Guide V9 · English V9. Match the numbers and wording in your printed question before using this solution.

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VIDEO HELP · TG-V9-059

Compare Estimates from Two Samples (TG-V9-059)

Compare 6/8 = 75% with 63/90 = 70%. With comparable sampling quality, the larger sample usually gives a more stable estimate; more observations do not automatically remove bias.

Space Math Explorers · approved worked example · 1:23 · Watch on YouTube

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These pages reproduce verified solution steps for the registered V9 questions. It does not diagnose learning needs or replace instruction from a qualified teacher or tutor.