Analyzing Data with a Graph Pie Graph Pie

Analyzing Data with a Graph

Pie Graph

Pie Graphs (Circle Graphs) • Shows how a part or share relates to the whole

Bar Graph

Bar graphs • Used to compare set of measurements, amounts, or changes.

Line Graphs

Line graphs • • Shows changes in related variables Independent variable is y-axis Dependent variable is x-axis Slope = rise/run

Direct proportion • The ratio of the variables is constant. The slope is constant. Slope = 1 Mass (g) Mass vs. Volume (m. L)

Inverse Proportion • Slope: rise = 1/run Time (minutes) Time it takes to fill 1 -gallon bucket with water Flow Rate (gallons per minute)

All graphs must have: • Title • Axis labels and/or legend • Appropriate Scale

Example: Creating a line graph Houseplant Growth 1. Title the Graph

Height (cm) 2. Label Axis with UNITS Houseplant Growth Time (weeks)

24 Height (cm) 3. Axis Scale: Spread It Out Houseplant Growth 18 12 6 0 2 4 6 8 Time (weeks)

24 Height (cm) 4. Plot the Data Points Houseplant Growth ● 18 ● 12 6● 0 ● ● ● 2 4 6 8 Time (weeks)

Houseplant Growth Height (cm) 5. Put in Best Fit Line 24 ● 18 ● 12 6● 0 ● ● ● 2 4 6 8 Time (weeks)

Two students were thirsty one day and decided to find out what type of fruit was the best for making the most juice to drink. They took six different kinds of fruits and squeezed them as much as they could to get all of the juice out. They collected the juice from each piece of fruit into a cup and measured their volume in milliliters. The data from their experiment can be seen in the table below. Type of Fruit Amount of Juice (m. L) Apple 25 Orange 37 Lemon 18 Banana 3 Watermelon 89 Pear