Comparing Populations Using Dot Plots

Comparing Populations Using Dot Plots

By Courtney Tout

7.4D - Reteach

​Some text here about the topic of discussion.

Multiple Choice

Percent Change= Amount of Change / Original

• A

• B

• C

• D

Multiple Select

Ronald uses 2 cups of sugar to make 12 brownies. Last week, Ronald made 84 brownies. How many cups of sugar did he use last week?

• 3.5

• 6

• 7

• 14

I Do

​Some text here about the topic of discussion.

To compare populations we compare:

• Medians

• Modes

• Ranges

• Shapes​

​Some text here about the topic of discussion.

Comparing Populations

Multiple Choice

What is median?

• Average

• Middle Number

• Most Common

• Highest Value

Multiple Choice

What is mode?

• Average

• Middle Number

• Most Common

• Highest Value

Multiple Choice

What is range?

• Average

• Middle Number

• Most Common

• Highest Value - Lowest Value

Multiple Choice

What is the shape?

• Skewed Symmetric

• Skewed Right

• Skewed Left

• Symmetric

Multiple Choice

What is the shape?

• Skewed Symmetric

• Skewed Right

• Skewed Left

• Symmetric

Multiple Choice

What is the shape?

• Skewed Symmetric

• Skewed Right

• Skewed Left

• Symmetric

We Do

​Some text here about the topic of discussion.

Multiple Choice

If you compare the medians of each data set, who spends more time online?

• Seventh graders

• Eight graders

• Both grades spend an equal amount of time online.

• Impossible to determine form the data sets.

Multiple Choice

One week, Kyasia drove to work. The

next week, she rode the train. Each day, she

recorded how long it took in minutes. What

can Kyasia infer from the two data sets?

• The time it take to get to drive to work is more consistent than the time it takes to take the train.

• Based on the mean, it generally takes longer to take the train to work.

• In terms of time, it is less consistent to drive than it is to take the train to work.

• It's impossible to make any inferences based on the data display.

Multiple Choice

Which of the following statements is true?

• Group 1 has a greater median number of hours that they watched television.

• The mean for group 2 is larger than the mean for group 1.

• The median for group 2 is larger than the median for group 1.

• Both sets of data are symmetric. You should use the mean to compare the measures of center.

You Do

​Some text here about the topic of discussion.

Multiple Choice

The double dot plots show the average wait times in minutes for two popular rides at an amusement park. Compare the measures of center and variation, which ride typically has a longer wait time?

• No inference can be made from the graph.

• Topsy Turvy

• The wait times are the same for both rides.

• Rocket Blast

Multiple Choice

The dot plots show the weights of a random sample of fish from two lakes.

Which Lake has a greater (bigger) range?

• Lake R

• Lake S

Multiple Choice

The dot plots show the number of miles Nina and Mark walked during a few days in April.

The median number of miles Mark walked is ___________ the median of the number of miles Nina walked.

• greater than

• less than

• equal to

Multiple Choice

The dot plots show the number of miles Nina and Mark walked during a few days in April.

The range of the number of miles Nina traveled ____________ the range of the number of miles Mark traveled.

• greater than

• less than

• equal to

Multiple Choice

EXIT TICKET: The dot plots show the number of miles Ben and Barbara ran in the month of February.

Which statement is best supported by the information in the dot plots?

• The mode of the number of miles ran by Barbara is greater than the mode number of miles ran by Ben.

• The least number of miles ran by Ben is greater than the least number of miles ran by Barbara

• The range of the number of miles ran by Barbara is greater than the range of he number of the miles ran by Ben

• The distribution of the data is approximately symmetical in both sets of data.

Multiple Choice

The dot plots show the number of hours two students watched television in the month of June.

Which statement is best supported by the data in the dot plots?

• The median number of hours Leslie watched television is equal to the median number of hours Dixie watched television.

• The mode number of hours Dixie watched television is greater than the mode number of hours Leslie watched television.

• Dixie had a greater range in the number of hours she watched television than Leslie.

• The least number of hours Leslie watched television is equal to the least number of hours Dixie watch television.

Multiple Choice

The dot plots show the number of siblings of students in two different classrooms.

Which statement is best supported by the data in the dot plots?

• The mode of the data in Mrs. Blackfield's class is less than the mode of the data in Mr. Johnson's class.

• The range of the data in Mr. Johnson's class is less than the range of the data in Mrs. Blackfield's class.

• The median of the data in Mrs. Blackfield's class is greater than the range of the data in Mr. Johnson's class.

• The minimum value of the data in Mr. Johnson's class is greater than the minimum value for the data in Mrs. Blackfield's class.