Measures of Spread and Center

The following symbol represents what?

• the sample mean

• the population mean

• the sample standard deviation

• the population standard deviation

• the sample size

The following symbol represents what?

• the sample mean

• the population mean

• the sample standard deviation

• the population standard deviation

• the sample size

The following symbol represents what?

• the sample mean

• the population mean

• the sample standard deviation

• the population standard deviation

• the sample size

The following symbol represents what?

• the sample mean

• the population mean

• the sample standard deviation

• the population standard deviation

• the sample size

According to the Empirical Rule, what percentage of data values lie within TWO standard deviation of the mean?

• 68%

• 95%

• 99.7%

• 100%

An entire data set can be summarized using one statistic. This statistic is most likely the _______.

• mode

• standard deviation

• range

• mean

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.

Ervin bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the range of Ervin's scores?

• 193

• 127

• 60

• 66

Find the range.
12, 5, 9, 18, 22, 25, 5

• 20

• 15

• 22

• 18

What is the median of this set of data?
10, 90, 80, 60, 50, 40, 70, 30, 20, 100

• 50

• 60

• 55

• 45