Measures of Variability: Range, Variance & Standard Deviation


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question 1 of 3

Range, standard deviation, and variance are 'similar' in that each looks at

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1. Professor Dublin has just given a biology exam and wants to calculate the 'range' of performance of his students. What must he do?

2. Professor Dublin wants to ensure he is thorough in his review of student performance, so he decides to calculate 'standard deviation' as well. What must Professor Dublin do to figure out this measure of variability?

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About This Quiz & Worksheet

Measures of variability are important to be familiar with when conducting research, and this quiz/worksheet will test your understanding of their components and significance.

Quiz & Worksheet Goals

In these assessments you'll be tested on the components and implications of:

  • Range
  • Standard deviation
  • Variance

Skills Practiced

This quiz and worksheet allow students to test the following skills:

  • Reading comprehension - ensure that you draw the most important information from the lesson regarding the significance of measures of variability
  • Making connections - use understanding of measures of variability to recognize the related significance of range, standard deviation, and variance
  • Information recall - access the knowledge you've gained regarding what variance attempts to estimate as well as the effects of not square rooting of the standard deviation and the implications of a small range

Additional Learning

To learn more, review the accompanying lesson Measures of Variability: Range, Variance & Standard Deviation. This lesson covers the following objectives:

  • Know the three measures of variability in research
  • Define population, sample, deviation, and parameter
  • Understand the role of range, standard deviation, and variance