Graphing and Math

Pie Graph

Shows parts of a whole.

Bar Graph

Compares categories.

Line Graph

Shows change over time or continuous data.

Independent Variable

Variable changed by the experimenter; placed on the x-axis.

Dependent Variable

Variable measured; placed on the y-axis.

Graph Title

Should include both independent and dependent variables.

Graph Key

Identifies multiple lines or categories.

Extrapolation

Predictions beyond collected data.

Interpolation

Predictions between collected data points.

DRY MIX

Dependent/Responding on Y-axis; Manipulated/Independent on X-axis.

Average

Add values together and divide by number of values.

Catalase Best Temperature

40°C

Taq Enzyme Best Temperature

50°C

Catalase Activity at 10°C

About 5 g/s (extrapolation)

Prediction Type for 10°C

Extrapolation

Best Enzyme at 100°C

Taq enzyme

Measurement Error

Data point far from expected trend.

Directly Proportional

Both variables increase together.

Inversely Proportional

One increases while the other decreases.

Parabolic

Relationship forms a curve.

Unrelated

No consistent relationship.