# Warm Up by ert554898

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```									                  Warm Up
•   ENTERTAINMENT use the data below. It shows the
gross collected during several Broadway seasons.
Year                  Earnings
(\$ million)
1997–1998             558
1998–1999             588
1999–2000             603
2000–2001             666
1. Make a scatter plot of the data
money a Broadway season will gross in 2005–
2006, if the trend continues.
Lesson 2-3 Notes:

Line Plots

Objective:
Construct and interpret line plots
Vocabulary

• A line plot is a diagram that shows the
frequency of data on a number line
Example
Make a Line Plot
1. BUILDINGS
Make a line plot of
the data shown
Step 1
Draw a number line
Step 2
Put an X above the
number that represents
the number of
stories in each
building
distribution of data

The range of the data, is the difference between
the greatest and least numbers in the data set
Example
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
range.

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.