# Data and Graphing - Ms MacCormack's Science Classes Data and Graphing Ms MacCormack Fall 2017 Line Graphs Used to show data that is continuous

Points are plotted using x-axis and y-axis Shows relationships between variables (how/if the IV affects the DV) Many times, the IV plotted on the x-axis is time.

Bar Graphs Data is NOT continuous Bars typically dont touch Allows us to compare descriptive data like amounts, percentages or values

There is no order to the categories on the X-axis Pie Graphs Data is NOT continuous Usually presents data as a part of a whole or as a

percentage. Categories add up to 100 Steps for Setting Up a Graph Properly

Set up your graphs correctly every time Remember Tails Dry Mix T - Title Describes both the independent variable

and dependent variable Example: Y vs X A - Axis

Put the independent variable on the x-axis and the dependent variable on the Y-axis I - Interval The interval (What you count by 2s, 5s, 10s, etc)

needs to be appropriate for the scale. Choose an interval that lets you make the graph as large as possible. L - Label

Both axes are labeled with the name and units in ( ) S - Scale Find the range (Max Min value) from data

table. Divide the range by the number of intervals you want. We dont want all of the data smushed in only one part of the graph; spread it our and make it as large as you can fit. After dividing, we may need to

round up to get a number that is easy to count by. D - Dependent Dependent variable

R - Responding what is measured/expected to change

Y- Y-axis Vertical axis M - Manipulated

What you change I - Independent Independent variable X X-axis

Horizontal axis