2What should be on every graph? THREE TITLES!overall title at the top of your graph describing what your graph is aboutx-axis title (bottom line) describing what information you test.Y-axis title (vertical line) describing what information you put
4X-axis (horizontal, bottom line) Your INDEPENDENT VARIABLES go along your x-axis.List each independent variable along the bottomDon’t forget to put a title along the x-axis after you have listed your independent variables
6Y-axis (vertical line) Your DEPENDENT VARIABLE goes along the vertical y-axis.You must look at your data to come up with an appropriate scale.The scale is what you count up by along the y-axis.Example: count up by 1’s, count up by 2’s, count up by 10’s, etc.Always start with zero in the bottom corner.
8Variables: are factors we can control, measure, or manipulate in an experiment Types of Variables: What is a Variable????Independent Variable:*one we manipulate and can changeEX. Colors, Days, Months, CitiesDependentVariable:*the one that we measure or observeEX. Temperature, # of shark attacksControl*the one that DOES not changeEX. Time we take temp, what tool we use, kind of flower pots
9DependentVariablePossible Control Variables:*where you get data*when you take dataIndependent Variable
10Bar graph & Line graphYou will make a bar graph if you are comparing 2 or more things.You will make a line graph if you are tracking something changing over a period of time.
11Practice bar graph Favorite Sport # of students Basketball 45 Football 36Baseball18Softball11Other25
15Types of Graphs Bar Graphs Circle Graphs 3 major types of Graphs: Line Graphs3. Circle GraphsBar Graphs1. Categorical data2. Vertical and horizontal bars3. Show amounts of each categoryMost common in science*Shows change over timeShows how one variable changes in response to anotherShows trends of dataCircle GraphsCategorical dataShows relationship of part to the wholeMust have data for all categoriesAlso called a pie chart