• ENTERTAINMENT use the data below. It shows the
gross collected during several Broadway seasons.
Broadway Season Earnings
1. Make a scatter plot of the data
2. Use your scatter plot to predict about how much
money a Broadway season will gross in 2005–
2006, if the trend continues.
Lesson 2-3 Notes:
Construct and interpret line plots
• A line plot is a diagram that shows the
frequency of data on a number line
Make a Line Plot
Make a line plot of
the data shown
Draw a number line
Put an X above the
number that represents
the number of
stories in each
Make some observations about the
distribution of data
The range of the data, is the difference between
the greatest and least numbers in the data set
Use a Line Plot to Analyze Data
2. SHOES The line plot below shows prices for different basketball
shoes. What is the range of the data?
The greatest price is $100, and the lowest price is $30.
Range: 100–30 or 70
The range of the prices is $70.
3. Identify any clusters, gaps, and outliers in the data in Example 2 and
explain what they mean
Many of the data cluster around $75.
You could say that most of the shoes cost from $70 to $85.
There is a gap from $30 to $50, so there were no shoes in this price
The number 30 appears removed from the rest of the data, so it
could be considered an outlier. This means that $30 is an extremely
low price and not representative of the whole data set.
On Your Own
a. Identify the range of the data in Example 1
Range: 73 – 17 = 56
The range of the stories is 56.