Variability in Statistics: Definition & Measures

Instructions:

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

question 1 of 3

Which of the following statements is NOT true regarding this data set: 41, 13, 17, 10, 5, 19, 10, 11, 22, 50, 30?

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1. What is the range of the following data set: 130, 23, 504, 203, 50, 492, 231, 452?

2. Given the mean of 7, what is the variance of the following data set: 6, 8, 4, 10, 7?

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About This Quiz & Worksheet

Your understanding of variability in statistics will be tested in this combination quiz and worksheet. Practice questions will assess your ability to determine range and variance.

Quiz & Worksheet Goals

Use this quiz to assess your ability to:

  • Define variability
  • Identify measures of variability
  • Determine range
  • Calculate variance

Skills Practiced

This assessment will help you practice these skills:

  • Critical thinking - apply relevant concepts to examine information about a group of data in a different light
  • Problem solving - use acquired knowledge to solve variability practice problems
  • Defining key concepts - ensure that you can accurately define variance and range
  • Information recall - access the knowledge you've gained regarding variability in statistics

Additional Learning

To learn more about this topic, review the lesson Variability in Statistics: Definition & Measures. This lesson covers:

  • Defining variability
  • Identifying measures of variability
  • Practicing variability calculations
  • Explaining what the data tell us
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