Name Date

I can … / Essential Question(s):
Key Concepts / Notes
When you want to display data graphically, you need to decide which type of graph presents the data most clearly. Each type of graph has specific strengths and weaknesses.
Types of Graphs:
Line Graph
Circle Graph
Bar Graph
Histogram
Scatterplot
Box-and-whisker Plot
Stem-and-leaf Plot
EXAMPLES:
1.  A mother is keeping a record of how her new baby’s weight changes as the baby grows. The mother’s record is shown in the table.What type of graph should she use to show how the baby’s weight changed over time? Why?
2.  Rubin used an altimeter to measure and record his height above sea level at different times during his hike in the mountains. Which type of data display could Rubin use to show how his height above sea level changed with time?
3.  Which graphical representation would be most useful in comparing the change in average earnings of male employees verses earnings of female employees over the course of a 50-year period.?
4.  Susan entered a highway at 1:00. On the highway, she had driven a total of 32 miles by 1:30, 61 miles by 2:00, and 125 miles by 3:00. Which kind of data display would be an appropriate way to show how Susan’s total driving distance varied with time and why?
5.  The table shows the number of people who speak each of the six most common languages of the world. Which type of graph is appropriate to display the data in the table? / Definition/ Picture / Strength / Weakness
Summary, Reflection, & Analysis

Name: ______Date: ______SCORE: ______/ 25 pts

Explain your reasoning for each question in a complete sentences.

1.  Which graph is most appropriate to show which team has the highest median football score?

Team A: 45, 18, 23, 27, 20, 17, 35

Team B: 10, 40, 13, 37, 28, 7, 37

Team C: 33, 30, 15, 17, 28, 28

a.  Circle graph

b.  Box-and-whisker plot

c.  Line graph

d.  Scatterplot

2.  Which graph is the most appropriate representation of the data below?

Age and Number of Boys Who Play Musical Instruments

Age / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13
Boys / 2 / 1 / 3 / 5 / 3 / 7 / 6 / 5
Age / 14 / 15 / 16 / 17 / 18 / 19 / 20
Boys / 7 / 4 / 8 / 4 / 5 / 5 / 6

a.  Circle graph

b.  Box-and-whisker plot

c.  Histogram

d.  Line graph

3.  Which graph is most appropriate to determine if the age of a tree relates to its diameter?

Tree Age and Diameter

Age (Years) / 5 / 10 / 9 / 20
Diameter (in.) / 1.4 / 2.0 / 1.8 / 3.4

a.  Circle graph

b.  Box-and-whisker plot

c.  Histogram

d.  Scatterplot

4.  Which is the best graph to use to show on which activity Francis spends the greatest part of her day?

Francis’s Daily Activities

Activity / Hours
Eating / 2.5
Sleeping / 7
Going to School / 6.5
Doing Homework / 2.5
Other / 5.5

a.  Circle graph

b.  Box-and-whisker plot

c.  Histogram

d.  Line graph

5.  The data to the below shows the weekly earnings of two 10th grade students who worked part-time on the weekend. (3 parts, answer each part in complete sentences)

Randall’s Earnings

Week / 1 / 2 / 3 / 4
Amount Earned / $45 / $50 / $35 / $45

Carla’s Earnings

Week / 1 / 2 / 3 / 4
Amount Earned / $35 / $60 / $25 / $15

a.  What would be the purpose for showing the data as a box-and-whisker plot?

b.  For showing the data as a double-line graph?

c.  For showing the data as two circle graphs?