Dot Plots, Histograms, and Stem-and-Leaf Plots

Dot Plots

By Jason Guion-Brooks

Dot Plot

• ​Organizes and displays data along a number line​

• each dot stands for a piece of data​

Subject | Subject

Some text here about the topic of discussion

• number of times the data occurs in the ​set

• ​shown by the number of dots above the value on the number line

Subject | Subject

Some text here about the topic of discussion

Frequency

Cluster

set of closely grouped data​

Subject | Subject

Some text here about the topic of discussion

Gap

• where no data values occur​

Subject | Subject

Some text here about the topic of discussion

Multiple Choice

The height of sunflowers, in inches, in Brittany's garden are shown below.

65, 66, 64, 63, 64, 62, 65, 63, 64, 66

Brittany displayed the data in a dot plot. Which of the dot plots correctly displays Brittany's data?

Multiple Choice

The height of sunflowers, in inches, in Brittany's garden are shown below.

65, 66, 64, 63, 64, 62, 65, 63, 64, 66

Brittany displayed the data in a dot plot. Which of the dot plots correctly displays Brittany's data?

Multiple Choice

The head of the school cafeteria gathered information about the popularity of school lunches. She recorded the number of times that each week a student in a class brought their lunch instead of buying school lunch.

Which of the following statements about the data is true?

• The mean is 3.

• The mode is 0.

• The median is 3.5.

• There is a gap in the data.

Multiple Choice

The dot plot shows the number of minutes it took for some of the 6th graders to climb the rope in gym class.

Which of the following statements is NOT true?

• The mean of the data is 7.25 minutes.

• The median is 8 minutes.

• The mode is 7 minutes.

• There are gaps in the data between 2 and 5, and 5 and 7.

Multiple Choice

The dot plot shows the typical sizes for birds Daniel saw on his bird watching trip.

True or false: Daniel did not see any 8-inch birds.

• True

• False

Multiple Choice

The dot plot shows the typical sizes for birds Daniel saw on his bird watching trip.

True or false: The mode for the data is 7.

• True

• False

Multiple Choice

The dot plot shows the typical sizes for birds Daniel saw on his bird watching trip.

True or false: The mean for the data is 7.

• True

• False

Open Ended

Students interviewed the musicians in a youth orchestra. They asked the musicians how many years they have taken music lessons.

What is the mean number of years of music lessons?