Graph Types Class A Class B.

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Presentation transcript:

Graph Types Class A Class B

All About Graphs As a science student, graphs will be the source of constant frustration. Why do you need to know how to graph? ???

All About Graphs Why do you need to know how to graph? Data is initially collected and recorded in data tables but the information is not easily visualized this way Rainfall (in mm) Jan Feb March April May 2006 1.1 1.2 1.0 2007 2.0 3.1 2.9 6.0 3.4 2008 6.1 5.2 5.6 3.9 5.0 Was average rainfall higher in 2007 or in 2008?

All About Graphs Why do you need to know how to graph? Data can be displayed in a graphic form to help scientists visualize and interpret the trends and variation within the data Was average rainfall higher in 2007 or in 2008? Key 2006 Blue 2007 Red 2008 Green

??? All About Graphs Why do you need to know how to graph? If you know how to graph you will be better able to interpret graphs yourself. Graphs are often used in places outside of science as well. ???

Bar Graphs

Bar Graphs Title Axis labels The purpose of a bar graph is to display and compare data. The relative height of the bars represents the amount of each variable. Title Axis labels

Line Graphs

Line Graphs Title Axis labels Line of Best Fit The purpose of a line graph is to show CHANGE OVER TIME Title Axis labels Line of Best Fit

Line Graphs What is a Line of Best Fit?

Double Line Graph

Double Line Graphs Title Axis labels Line of Best Fit Key The purpose of a double line graph is to show CHANGE in more than one related variable OVER TIME Title Axis labels Line of Best Fit Key

Double Line Graphs What is a Key?

Pie Chart

Pie Chart Title Sector labels Key The purpose of a pie chart is to show data as parts of a whole Percentages Title Sector labels Key

Study Time Versus Grades Scatter Plot Study Time Versus Grades 100 * * * * 80 * * * Grade 60 40 20 1 2 3 4 5 Study Time in Hours

Scatter Plot Title Axis labels The purpose of a scatter plot is to show how closely two sets of data are related (or correlated) The closer the line is to being straight, the more closely related the data is Title Axis labels

Scatter Plot Which scatter plot show data which is more closely related (correlated)?