This document provides information about line graphs and bar graphs, including their purposes, types of data they can represent, and how to properly construct them. It explains that line graphs are useful for showing trends over time while bar graphs compare categorical data values. It also includes examples of correctly and incorrectly constructed line plots and provides homework for more graphing worksheets.

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