Graphing Review

Variables Which variable do you change? – Independent variable – X axis Which variable do you measure? – Dependent variable – Y axis

Units/Axes Units are in metric (cm, mL, g) Axes need to be… – Evenly spaced – Have the same intervals (count by 2’s, 10’s, 50’s, etc.)

Types of Graphs Bar graphs – Comparing data Line graphs – Show change over time Pie charts – Compare statistical data

Juan and Jared Type – Bar Graph X axis – Lunch A, B, C Y axis – Amount of tickets sold

Making Graphs 1. Best-line fit - not connect-the-dot 2. Give your graph a detailed title. 3. Label both axes with units.

Clams Dependent variable – Number of developing clams Independent variable – Water temperature

Graph