1. Data Analysis Choosing the Appropriate Graph 6th Grade Math
Georgia Performance Standards:
M6D1c: Choose appropriate graphs to be consistent with the nature of the data (categorical or numerical).
Graphs should include: pictographs, histograms, bar graphs, line graphs, circle graphs, and line plots.

2. Essential Question
Can you pick the correct graph to use when given certain information?

3. Choosing Appropriate Graphs
Pictograph – Visual display of data
***Key Features: Must use a symbol
to represent data items
“Eye Catching”

4. Choosing Appropriate Graphs…
Bar Graph - categorical data
“categories”
Type
of Fish
Swimming Speed
Carp 6
Cod 8
Mackerel 11
Pike
A Legend tells you what each bar represent.

5. Choosing Appropriate Graphs…
Line Graph – change over a period of time

6. Choosing Appropriate Graphs…
Histogram – a special type of bar graph that displays intervals or ranges
Key Features: Ranges and Bars connect

7. Choosing Appropriate Graphs…
Circle Graph – displays percents or fractional parts

8. Choosing Appropriate Graphs…
Stem-and-leaf Plot – lists numerical data in order from least to greatest
ex) Ordered Plot
Line Plot – shows data above number line displayed with “X’s” (outliers and mode easily identified)

9. What type of graph? 2. 3. The ages of 16 school teachers are: 4.
A car dealership sells seven makes of cars. Which data display(s) could be used to compare sales for each make of car last year? 2.
3. The ages of 16 school teachers are:
48, 52, 46, 58, 25, 48, 55, 51, 58, 49, 60, 53, 30, 27, 42, 49
Postage Stamp Rate
Year
1992
1994
1996
1998
2000
2002
2004
U.S. Letter Rate
(cents per oz.) 29 32 34 37 40 4.

10. What type of graph would you use to display this information?
Would you use a bar graph or a stem-and-leaf plot to display the ages of 30 people buying a movie ticket? Explain.
How is the graph misleading? 6.
Recreation football sign-ups are complete. The following number of boys registered in each age group are listed below:
7 to 8 year olds - 48 boys
9 to 10 year olds – 73 boys
11 to 12 year olds – 68 boys
What type of graph would you use to display this information?