Graphing Data

Why Do We Use Graphs? Graphs help us visualize numerical data. There are several different types of graphs: Bar graphs Pie graphs Line graphs

Bar Graphs Bar graphs are used to show a comparison of multiple objects.

Pie Graphs Pie graphs are used to compare the parts of a whole.

Line Graphs Line graphs are used to show the relationship between variables, particularly TIME

Types of Relationships (between variables) Direct: as x increases y increases Indirect: as x increases y decreases Constant: as x increases y remains the same

Axes of a Graph: X-axis (horizontal axis) Horizontal means: Y-axis (vertical axis) Vertical means:

Label the x and y axes

Label the x and y axes Y-Axis Dependent Variable X-Axis (Independent Variable)

Scale Now you need to select evenly spaced intervals that include all your data (a scale). Data set 1: 15, 30, 45, 7, 64, 95 Minimum value for scale:____ Maximum Value for scale:____

Scale Now you need to select evenly spaced intervals that include all your data (a scale). Data set 1: 15, 30, 45, 7, 64. 96 Minimum value for scale:__7_ Maximum Value for scale:_95_

Title:_____________________ Money Student Number

Title:_____________________ Money Student Number