9.2.1 Stem & Leaf and Box & Whisker Plots

Multiple Select

The stem-and-leaf plot below shows data in inches for different heights within a group of 20 people.

Which of the following heights are not contained in the data set being displayed.

Select all that apply.

• 34 inches

• 73 inches

• 67 inches

• 49 inches

Multiple Select

Jose and Anna are discussing how to find the mean from a stem-and-leaf plot.

Jose thinks that they should find the middle number in the data set. Anna does not believe this is the correct way to find the mean.

Which statements below are correct?

Select all that apply.

• Jose described the process correctly

• Jose described how to find the median of the data

• To find the mean you add all the data values and divide by the number of values

• To find the mean you find the number that appears most often

Fill in the Blank

The stem-and-leaf plot displays the heights of people at a party. Find the following measures from the data: mean

.

Fill in the Blank

The stem-and-leaf plot displays the heights of people at a party. Find the following measures from the data: median

.

Fill in the Blank

The stem-and-leaf plot displays the heights of people at a party. Find the following measures from the data: mode

Fill in the Blank

The stem-and-leaf plot displays the heights of people at a party. Find the following measures from the data: range

Draw

Joshua rides the subway everyday. The time in minutes of each subway ride is:

17, 22, 28, 16, 12, 21, 30, 32, 26, 14, 19, 20, 19, 30, 34

Fill in the Blank

How many trips take 20 minutes or more?

Fill in the Blank

How long is the fastest subway ride?

__ minutes

Fill in the Blank

What is the average travel time?

Round to nearest whole number

__ minutes

Match

Consider the data set shown in the stem-and-leaf plot below. Find the mean, median, mode, and range of the data.

Round to the nearest hundredth.

• Mean

• Median

• Mode

• Range

26.06

25

37

42

• 26.06

• 25

• 37

• 42

Multiple Choice

What is the mode of the data set?

• 8.6

• 7.6

• 6.1

• 7.0

Multiple Select

Which of the following statements are true for the following data set?

12, 13, 14, 19, 8, 9, 9, 9, 10, 12

Select all that apply.

• The maximum is 19

• The minimum is 12

• The third quartile is 13

• The first quartile is 8

• The median is 11

Hotspot

A coach was curious about the length of her players’ names. She made a list of the total number of letters in each player’s name as shown below.

8, 10, 10, 11, 11, 11, 11, 12, 12, 12, 13, 14, 14, 15, 16, 17, 22

Which is the correct five-number summary for the data?

Match

Match the numbers of the five-number summary with the parts of a box and whisker plot.

• Maximum

• Quartile 3

• minimum

• median

• Quartile 1

The end of the right hand whisker

The right hand vertical edge of the box

The end of the left hand whisker

The line inside of the box

The left hand vertical edge of the box

• The end of the right hand whisker

• The right hand vertical edge of the box

• The end of the left hand whisker

• The line inside of the box

• The left hand vertical edge of the box

Hotspot

Kareena wants to create a box and whisker plot using the following data points.

45, 31, 11, 17, 12, 21, 19, 27, 35, 14

Which box plot correctly represents Kareena’s data?

Draw

Draw a box and whisker plot

Multiple Select

A scientist measured the lengths in feet of 10 humpback whales and 10 blue whales. Here are two box and whisker plots that summarize their data.

Which of the following are true?

Select all that apply.

• The lengths of the humpback whales tend to vary less than the lengths of the blue whales

• The typical length for the blue whales is about 45.5 feet and is about 51.8 feet for humpback whales.

• The blue whaled tended to be longer than the humpback whales.

• The typical length for a humpback whale is about 44.5 feet.

• The typical length for a blue whale is about 50.8 feet.

Now What...