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Year 12 Maths Standard 2 (2027) The normal distribution

The Empirical Rule (68-95-99.7)

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Questions
Question 1
190067

For a normally distributed data set, approximately what percentage of the data lies within one standard deviation of the mean?

Empirical rule percentagesA normal curve with the empirical-rule per-segment percentages 2.35, 13.5, 34, 34, 13.5, 2.35 marked between the standard-deviation lines. 2.35% 13.5% 34% 34% 13.5% 2.35% x 20 30 40 50 60 70 80
68
 \(\%\) 1 mark

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