Graphing Let’s Display the Data TYPES OF GRAPHS Bar Graph Pie Graph Line Graph AKA “Cartesian”

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Presentation transcript:

Graphing Let’s Display the Data

TYPES OF GRAPHS Bar Graph Pie Graph Line Graph AKA “Cartesian”

Bar Graphs USE BARS TO SHOW DATA!

Pie Graphs USE CIRCLES TO SHOW DATA Sorry, no pies. 

Line Graphs Used in Math, Science, and Business. PAY ATTENTION!

The Parts of a Graph The Independent variable (X-axis) The Dependent variable (Y-axis) The Scale (The space between marks) The Legend (Explains symbols) The Title (What the Graph is about)

Independent Variable Independent variable belongs on the X axis of the graph (Horizontal: Left & Right). It represents the data that can be directly controlled by you. Examples: time(length of the experiment), distance(depth of the water), temperature, number of Taki’s eaten, etc….

Independent Variable

Dependent Variable Placed on the Y-axis (Vertical: Up and Down). This variable depends upon the independent variable. Whatever happens to the independent variable the dependent variable should react to it. Example: If we increase the number of Takis eaten, the activity of your gag reflex increases.

Dependent Variable

The Scale The scale represents the range of values that applies to each variable. The scale must contain all the data values for each variable and must be arranged on the graph using multiples to insure equal distribution: 2X, 5X, etc. The scale must occupy at least 3/4ths of the axis length.

The Scale

The Legend This part of the graph explains the values represented on the X and Y axis’. It is usually placed near the lower right area of the graph.

The Title The title should be a short statement representing what is found on the graph. It usually contains the independent and dependent variables. Example: Average Number of Takis Eaten Before People Gag.

Example of a Completed Graph