Experimental Design Diagram
Title: The Effect of Different Aged Compost on Bean Plant Growth
Independent Variable: Age of Compost
3 month-old compost
6 month-old compost
No compost (control
Hypothesis: If older compost is applied, then plant growth will be increased.
Dependent Variable: Height of Plants (cm)
Constants: Amount of light
Amount of water
Amount of compost
Based upon a rectangle.
Independent Variable: written across top of rectangle that is divided into labeled columns to represent different levels of the independent variable.
Number of trials is indicated in each column.
Dependent variable and constants are also included in the rectangle.
An appropriate experimental title and hypothesis are written above experimental design diagram