Graphing

Why use a graph? To Analyze Data Graphs are used to organize data Graphs are used to easily and quickly interpret data

Types of Data Qualitative- information that describes color, odor, shape or some physical characteristic Quantitative data- numerical information

Types of Graphs Circle graph (pie chart) Bar graph Line graph

What each graph needs 1. Determine a Title for the graph 2. Identify manipulated and responding variables 3. Determine the increments needed for the axes. Remember increments must be equal. 4. Create a key or label axes with units 5. Create the graph from data

Bar Graph Compares quantities and categories What is missing from this graph?

Bar Graphs

Circle Graph (Pie Chart) Useful when percentages need to be represented Use a pie chart when representing parts of a whole (100%)

Line Graphs Compare relationships between two variables What are the 2 types of variables? On which axis is each located? Determine if the relationship is direct or inverse.

Line Graphs

M & M’ s Create a data table to record color and numbers of each color of m & m’s. Identify the different colors of M & M’s and count the number of each color. Create a bar graph using space on your graph paper. Remember the things that every graph or chart needs.

M & M ‘s Convert the data collected from your bar graph to percentages (part / total x 100) Construct a Pie Graph using the results of your calculations Include all parts of a graph

M & M’s Count the total number of M & M’s and begin with an EVEN number Create a table to record time and number of M & M’s remaining Every 15 sec eat half of the M & M’s Remember to record how many M & M ‘s remain each time Continue eating the M & M’s until one remains Create a line graph using your time and number of M & M’s eaten.