Mrs. G. Standard Deviation and Variance Practice

Order the dot plots from least to greatest standard deviation.

• A, D, C, B

• B, C, D, A

• A, D, B, C

• B, C, A, D

If a bowler needs to hit exactly 6 pins, which bowler is more reliable to hit that number?

• Bowler A
• Bowler B
• Both
• Neither

Jessie is comparing the prices of meals at two different restaurants. She makes a dot plot for each of the restaurants showing the cost for each meal on the dinner menu. Which restaurant typically charges more for a meal?

• Restaurant A

• Restaurant B

• They are approximately the same

Jessie is comparing the prices of meals at two different restaurants. She makes a dot plot for each of the restaurants showing the cost for each meal on the dinner menu. Which restaurant offers meals at a larger variety of prices?

• Restaurant A

• Restaurant B

• The variance is about the same.

Jessie is comparing the prices of meals at two different restaurants. She makes a dot plot for each of the restaurants showing the cost for each meal on the dinner menu. Which restaurant's data set would have a smaller standard deviation?

• Restaurant A

• Restaurant B

• The variance is about the same.

The greater the variability (spread) of the distribution, the _____________ the deviations from the mean.

• smaller

• closer

• greater

• more approximate

A data set with a small standard deviation would have data values that are _____________________________________.

• clustered closely around the mean.

• spread out from the mean.

• very high in value.

• spread out from one another.

A mound shaped graph would have a __________ standard deviation.

• small

• large

• different

• mean

A uniform graph would have a __________ standard deviation.

• small

• large

• different

• mean

Which histogram would have a larger standard deviation?

• Histogram A

• Histogram C

• They are about the same.