🚀 Space Math Explorers

TEACHER-GUIDE-VERIFIED · TG-V9-053

2. 45 of 50 observations are usable. Find experimental reliability.

Verified solution

Solution: 45/50=0.90=90%.

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-V9-053

Calculate Experimental Reliability (TG-V9-053)

Of 50 observations, 45 are usable: 45/50 = 0.90 = 90%. Check the remaining 10% and distinguish this sample estimate from a guarantee about future observations.

Space Math Explorers · approved worked example · 1:12 · 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.