Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

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Warm Up Problem of the Day Lesson Presentation Lesson Quizzes

Create a bar graph of the data. Warm Up Create a bar graph of the data. Favorite rides at fair: Ferris wheel = 5, loop the loop = 4, merry-go-round = 3, bumper cars = 7, sit and spin = 9

Problem of the Day A set of 7 numbers has a mean of 36, a median of 37, a mode of 37, and a range of 6. What could the 7 numbers be? Possible answer: 33, 33, 36, 37, 37, 37, 39

Learn to organize data in line plots, frequency tables, and histograms.

Vocabulary frequency frequency table line plot histogram

The frequency of a data value is the number of times it occurs. A frequency table tells the number of times an event, category, or group occurs.

Additional Example 1: Using Tally Marks to Make a Frequency Table Students in Mr. Ray’s class recorded their fingerprint patterns. Which type of pattern do most students in Mr. Ray’s class have? whorl loop whorl loop arch arch loop whorl loop arch whorl arch arch whorl arch loop Make a table to organize the data.

Reading Math A group of four tally marks with a line through it means five. t llll = 5 llll llll = 10

Number of Fingerprint Patterns Additional Example 1 Continued Students in Mr. Ray’s class recorded their fingerprint patterns. Which type of pattern do more students in Mr. Ray’s class have? whorl loop whorl loop arch arch loop whorl loop arch whorl arch arch whorl arch loop Step 1: Make a column for each fingerprint pattern. Step 2: For each fingerprint, make a tally mark in the appropriate column. Loop Arch Whorl Number of Fingerprint Patterns Most students in Mr. Ray’s class have an arch fingerprint. l l l l l l l l l l l l l

Make a table to organize the data. Check It Out: Example 1 Students in Ms. Gracie’s class recorded their fingerprint patterns. Which type of pattern do more students in Ms. Gracie’s class have? whorl loop whorl loop arch whorl loop whorl loop whorl whorl arch arch whorl arch loop Make a table to organize the data.

Number of Fingerprint Patterns Check It Out: Example 1 Continued Students in Ms. Gracie’s class recorded their fingerprint patterns. Which type of pattern do more students in Ms. Gracie’s class have? whorl loop whorl loop arch whorl loop whorl loop whorl whorl arch arch whorl arch loop Step 1: Make a column for each fingerprint pattern. Step 2: For each fingerprint, make a tally mark in the appropriate column. Loop Arch Whorl Number of Fingerprint Patterns Most students in Ms. Gracie’s class have a whorl fingerprint. l l l l l l l l l l l l l l

A line plot uses a number line and x’s or other symbols to show frequencies of values.

Additional Example 2: Making a Line Plot Students collected tennis balls for a project. The number of balls collected by the students is recorded in the table. Make a line plot of the data. 11 10 15 14 16 Tennis Balls Collected Step 1: Draw a number line. x x x x x x x x x x x Step 2: For each tennis ball, use an x on the number line to represent how many were collected. x 5 6 7 8 9 10 11 12 13 14 15 16

Check It Out: Example 2 Students collected aluminum cans for a project. The number of cans collected by the students is recorded in the table. Make a line plot of the data. 11 15 5 14 7 Cans Collected Step 1: Draw a number line. x x x x x x x x x Step 2: For each aluminum can, use an x on the number line to represent how many were collected. x x 5 6 7 8 9 10 11 12 13 14 15 16

Pages Read Last Weekend Additional Example 3: Making a Frequency Table with Intervals Use the data in the table to make a frequency table with intervals. 18 37 34 22 5 7 19 40 15 12 Pages Read Last Weekend

Pages Read Last Weekend Additional Example 3 Continued Use the data in the table to make a frequency table with intervals Frequency 31–40 21–30 11–20 1–10 Number Pages Read Last Weekend 2 4 1 3 Step 1: Choose equal intervals. Step 2: Find the number of data values in each interval. Write these numbers in the “Frequency” row. This table shows that 2 students read between 1 and 10 pages, 4 students read between 11 and 20 pages, 1 person read between 21 and 30 pages, and 3 people read between 31 and 40 pages last weekend.

Number of Miles Driven on Saturday Check It Out: Example 3 Use the data in the table to make a frequency table with intervals. 38 21 34 27 5 7 19 9 29 17 Number of Miles Driven on Saturday

Number of Miles Driven on Saturday Check It Out: Example 3 Continued Use the data in the table to make a frequency table with intervals. Frequency 31–40 21–30 11–20 1–10 Number Number of Miles Driven on Saturday 3 2 3 2 Step 1: Choose equal intervals. Step 2: Find the number of data values in each interval. Write these numbers in the “Frequency” row. This table shows that 3 people drove between 1 and 10 miles, 2 people drove between 11 and 20 miles, 3 people drove between 21 and 30 miles, and 2 people drove between 31 and 40 miles on Saturday.

A histogram is a bar graph that shows the number of data items that occur within each interval.

Additional Example 4: Making a Histogram Use the frequency table in Additional Example 3 to make a histogram. Step 1: Choose an appropriate scale and interval. Step 2: Draw a bar for the number of students in each interval. The bars should touch but not overlap. Step 3: Title the graph and label the axes.

Number of Pages Read Last Weekend Check It Out: Example 4 Use the frequency table in Check It Out: Example 3 to make a histogram. Step 1: Choose an appropriate scale and interval. Step 2: Draw a bar for the number of students in each interval. The bars should touch but not overlap. Number of Pages Read Last Weekend Number of Pages Students Step 3: Title the graph and label the axes.

Lesson Quizzes Standard Lesson Quiz Lesson Quiz for Student Response Systems

Lesson Quiz: Part I 1. Students listed the number of days they spent on vacation in one year. Make a tally table with intervals of 5. 2, 18, 5, 15, 7, 10, 1, 10, 4, 16, 7, 11, 17, 3, 8, 14, 13, 10

Lesson Quiz: Part II 2. Use your tally table from problem 1 to make a frequency table.

Lesson Quiz for Student Response Systems 1. Richard listed the number of books lent by their school library each day. Identify the corresponding tally table with intervals of 5. 3, 18, 6, 14, 8, 10, 1, 10, 4, 17, 8, 11, 17, 4, 8, 14, 14, 10 A. B.

Lesson Quiz for Student Response Systems 2. Identify the frequency table for the given data. A. B.