# Measures of Variability: Range, Variance & Standard Deviation

Instructions:

question 1 of 3

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

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### 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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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