Transcript Document

EXAMPLE 1
Making a Frequency Table
EXAMPLE 1
Making a Frequency Table
To find which type of art project was chosen
most often, you can make a frequency table.
EXAMPLE 1
Making a Frequency Table
To find which type of art project was chosen
most often, you can make a frequency table.
EXAMPLE 1
Making a Frequency Table
To find which type of art project was chosen
most often, you can make a frequency table.
EXAMPLE 1
Making a Frequency Table
To find which type of art project was chosen
most often, you can make a frequency table.
EXAMPLE 1
Making a Frequency Table
To find which type of art project was chosen
most often, you can make a frequency table.
ANSWER
The students most often chose a painting project.
GUIDED PRACTICE
for Example 1
1. The data at the top of the page could have been
recorded in a frequency table as the information
was gathered. Explain how this could be done and
why this might be a better way to record the data.
GUIDED PRACTICE
for Example 1
2. What If? Suppose the choices for 5 more students
were: sculpture, sculpture, drawing, drawing,
sculpture. Make a new frequency table including
these data. Which type of project was chosen most
often?
EXAMPLE 2
Making a Line Plot
EXAMPLE 2
Making a Line Plot
Summer Reading
The frequency table shows how many books the
students in a class read during summer vacation.
EXAMPLE 2
Making a Line Plot
Summer Reading
The frequency table shows how many books the
students in a class read during summer vacation.
a. Make a line plot of the
data.
EXAMPLE 2
Making a Line Plot
Summer Reading
The frequency table shows how many books the
students in a class read during summer vacation.
a. Make a line plot of the
data.
b. Use the line plot to find
the total number of
students.
EXAMPLE 2
Making a Line Plot
Summer Reading
The frequency table shows how many books the
students in a class read during summer vacation.
a. Make a line plot of the
data.
b. Use the line plot to find
the total number of
students.
c. Use the line plot to find
how many students read
four or more books.
EXAMPLE 2
SOLUTION
Making a Line Plot
EXAMPLE 2
Making a Line Plot
SOLUTION
a. Make a line plot of the data.
EXAMPLE 2
Making a Line Plot
SOLUTION
a. Make a line plot of the data.
EXAMPLE 2
Making a Line Plot
SOLUTION
a. Make a line plot of the data.
EXAMPLE 2
Making a Line Plot
SOLUTION
a. Make a line plot of the data.
b. There are 22 x marks in all, so the total number of
students is 22.
EXAMPLE 2
Making a Line Plot
SOLUTION
a. Make a line plot of the data.
b. There are 22 x marks in all, so the total number of
students is 22.
c. The total number of x marks above the numbers
4, 5 and 6 is six, so six students read four or more
books.
GUIDED PRACTICE
for Example 2
MULTIPLE REPRESENTATIONS The following data
show the numbers of letters in students’ names. Use
the data in Exercises 3–5.
6, 5, 4, 4, 5, 3, 9, 8, 6, 4, 3, 4, 7, 5, 4, 3, 8, 4, 9, 3
3. Make a frequency table of the data.
4. Make a line plot of the data.
5. Choose one of the displays. Use it to find out
whether more students have names with 3 letters
or names with 7 or more letters. Describe which
display you choose and how you use it to answer
the question.