9th Grade Variance Quizzes, Questions & Answers

9th Grade

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Understanding Variance as a Measure of Spread

Understanding Variance As A Measure Of Spread

In this quiz, you're diving into the world of variance, which is like a "spread check" for your data. It tells you how scattered or consistent your data points are around the average. By walking through the...

Questions: 21 | Attempts: 11 | Last updated: Dec 11, 2025

Sample Question 1
What does variance measure in a data set?

The middle value of the data

The most frequently occurring value

How spread out the data values are from the mean

The difference between the maximum and minimum values

Sample Question 2
Which of the following best describes the first step in calculating variance?

Square all the data values

Subtract each value from the median

Add all the deviations together

Find the mean of the data set

Sample Question 3
After finding the mean, what is the next step in calculating variance?

Square the mean

Find the deviation of each value from the mean

Add all values together

Divide by the number of data points

9th Grade Variance Quizzes, Questions & Answers

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