1. Line & Bar Graphs
Objectives:
• To understand when to use line & bar graphs
• To understand how to create line & bar graphs
• Frameworks: 10.D.1

2. Graphs
A visual representation of a set of data
Why do we put numbers in a graph?
Which graph to choose?

3. Graph Choices
Chart Type Description
Column Compares values from different categories.
Line Compares values from different categories. Often used to
show trends and changes over time.
Pie Compares relative values of different categories to the
whole.
Bar Compares values from different categories.
Area Compares values from different categories. Similar to the
line chart except that areas under the lines contain a fill
color.
XY (Scatter) Shows the patterns or relationship between 2 or more sets
of values. Often used in scientific studies and statistical
analyses.

4. Line Charts
X axis is often date or
time, while the y axis
is the value being
tracked.
Some line charts
compare 3 or 4
values being tracked.

5. Bar Graphs

6. Column Graphs

7. Line Plots
The count of x
marks above each
category tells you
the number of items
in that category.

8. Which line plot is correct?

9. Do Worksheets
Homework: more worksheets