The 68–95–99.7 Rule (HSC SSCE Mathematics Standard): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
In a normal distribution, what % of data lie within 1 standard deviation of the mean?
In a normal distribution, what % of data lie within 1 standard deviation of the mean?
68%
What % of data in a normal distribution fall within 2 standard deviations of the mean?
What % of data in a normal distribution fall within 2 standard deviations of the mean?
95%
What % of data lie within 3 standard deviations of the mean in a normal distribution?
What % of data lie within 3 standard deviations of the mean in a normal distribution?
99.7%
In a symmetrical normal distribution, what % of data lie above the mean?
In a symmetrical normal distribution, what % of data lie above the mean?
50%
What % of data lie beyond 1 standard deviation above the mean?
What % of data lie beyond 1 standard deviation above the mean?
16%
What % of data lie beyond 2 standard deviations above the mean?
What % of data lie beyond 2 standard deviations above the mean?
2.5%
If mean and SD , what range contains 68% of data?
If mean and SD , what range contains 68% of data?
70 to 80
If mean and SD , what range contains 95% of data?
If mean and SD , what range contains 95% of data?
8 to 16
Mean delivery min, SD min. What % take more than 30 min?
Mean delivery min, SD min. What % take more than 30 min?
16%
Mean days, SD days. If 400 patients, how many recover within 16 days?
Mean days, SD days. If 400 patients, how many recover within 16 days?
390