Experimental Design

Control

Control

an element that remains unchanged or unaffected by other variables. This group is used to compare the results of the factor being tested

Hypothesis

Educated guess or a prediction about how the independent variable will affect the dependent variable

Independent Variable

The variable that is changed in the experiment to examine its effect on the dependent variable

Experiment

An organized procedure to test your hypothesis.

Dependent Variable

is what is affected by the independent variable and is what is being measured in the experiment

Constant

Things that cannot be changed by the person or group conducting the experiment

Controlled Experiment

An experiment where only one factor is being tested

Line Graph

Used to show relationships between variables

Experimental Group

The group contains the independent variable

Data

Measurements and observations gathered from the experiment

Variable

Anything that could change during an experiment

Qualitative Observation (data)

Describes the quality of something and data involving numbers

Inference

Idea of what you think may have happened

Observations

Facts not opinions

Objective or Problem

The question that the experiment will answer