9.1-9.3 Review

Is this a statistical question:

"How many hours do sixth grade students sleep per night?"

• Yes

• No

Is this a statistical question:

"How many countries are in North America?"

• Yes

• No

Display the data above in a dot plot. You will use the dot plot to answer the next 3 questions. (NO answer for this question is needed)

From your dot plot identify any clusters.

• 5-6

• 3-5

• 3-6

• 4-5

From your dot plot identify any peaks.

• 0

• 0 and 5

• 5

• None

From your dot plot identify any gaps.

• 0 to 3

• 1 to 2

• 0 to 5

• None

Find the mean of the data. Save your work you will need it for the next 3 questions

18, 12, 90, 15, 16, 20

The mean is ______

Find the median of the data. Save your work you will need it for the next 2 questions

18, 12, 90, 15, 16, 20

The median is ______

Find the mode(s) of the data. Save your work you will need it for the next questions

18, 12, 90, 15, 16, 20

The mode(s) is/are ______

Which measure of center best represents the data: mean, median or mode

18, 12, 90, 15, 16, 20

The mode(s) is/are ______