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Estimating Population Percentages from Normal Distributions: The Empirical Rule & Examples

Instructions:

Choose an answer and hit 'next'. You will receive your score and answers at the end.

question 1 of 3

_____ of normally distributed data is always contained within 1 standard deviation of the mean.

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1. _____ of normally distributed data is always contained within 2 standard deviations of the mean.

2. _____ of normally distributed data is always contained within 3 standard deviations of the mean.

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About This Quiz & Worksheet

Review your understanding of how to estimate population percentages from normal distributions with this quiz and worksheet.

Quiz & Worksheet Goals

The focus of these assessments is:

  • Finding the estimated percentage of area between the mean and 1 standard deviation
  • How many standard deviations Six Sigma seeks to keep errors within
  • The area between Z-scores -3 and 3

Skills Practiced

  • Information recall - access the knowledge you've gained regarding the area between specific Z-scores
  • Making connections - use understanding of the concept Z-scores
  • Reading comprehension - ensure that you draw the most important information from the lesson on estimating population percentages

Additional Learning

This lesson, Estimating Population: Percentages from Normal Distributions: The Empirical Rule & Examples, will teach you how to estimate population percentages from normal distribution. Objectives covered include:

  • Understand normal distribution
  • Know the empirical rule
  • Review Six Sigma
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