A-Z Popular Blog Experiments Search »
Related Topics

Null Hypothesis

3 Examples of an Experiment Design

 , July 18, 2018 updated on February 26, 2021
An experiment design is a plan to execute an experiment. This includes details such as a hypothesis, treatments and controls that allow others to evaluate your experiment or replicate it. The following are illustrative examples of an experiment design.

Soil Desalination

A simple experiment with a single negative control to determine if a series of overwaterings will lower the salt content of soil in a pot. This begins with a purpose statement that outlines the question you are investigating. In practice, this often includes some background information such as the results of similar research. This is followed by identification of a null hypothesis, alternative hypothesis, independent variables, dependent variables and confounding variables. The design also includes textual descriptions of treatment, control and random assignment procedures.


An experiment to test if a toothpaste solution can disinfect a surface. This experiment design includes a positive control which is a disinfectant that is known to be somewhat effective.


The following experiment design goes further to indicate why the alternative hypothesis is possible. It has no negative or positive control but is a comparison of two treatments.
Overview: Experiment Design
A plan to execute an experiment.
Related Concepts


This is the complete list of articles we have written about experiments.
Alternative Hypothesis
Control Group
Dependent Variable
Empirical Evidence
Experiment Design
Experimental Error
Explanatory Power
Natural Experiment
Negative Control
Negative Correlation
Null Hypothesis
Original Research
Positive Control
Positive Correlation
Primary Research
Qualitative Info
Random Assignment
Random Error
Scientific Control
Scientific Fact
Soft Science
Systematic Error
If you enjoyed this page, please consider bookmarking Simplicable.


The definition of hypothesis with examples.


A guide to designing and conducting experiments.

Experiment Variables

The common types of variables in an experiment with an example.

Independent Variables

The definition of independent variables with examples and comparisons.

Dependent Variable

The definition of dependent variable with examples.

Experiment Controls

The common types of experiment control explained.

Scientific Control

The basic types of scientific control.

Extraneous Variables

The common types of extraneous variables.

Control Group

The common types of control group with examples.

Negative Control vs Positive Control

The difference between a negative control and a positive control with an example.

Negative Control

The definition of negative control with examples.


The common types of research.

Research Skills

A list of common research skills.

Soft Science

The definition of soft science with a list of its basic characteristics.

Words To Describe Science

A vocabulary for describing science, research and scientific knowledge.

Words To Describe Evidence

A vocabulary for describing evidence.

Hypothesis Types

The common types of hypothesis with examples.

Science Words

An a-z list of foundational science vocabulary.

Research Design

An overview of the common types of research design.
The most popular articles on Simplicable in the past day.

New Articles

Recent posts or updates on Simplicable.
Site Map