# Which is the independent variable in an experiment?

## Which is the independent variable in an experiment?

The independent variable is “controlled” or held constant in the control group. A single experiment may include multiple experimental groups, which may all be compared against the control group. The purpose of having a control is to rule out other factors which may influence the results of an experiment.

## Why is it important to have a control group in an experiment?

The purpose of having a control is to rule out other factors which may influence the results of an experiment. Not all experiments include a control group, but those that do are called “controlled experiments.”

What is the definition of an experimental group?

An experimental group is a test sample or the group that receives an experimental procedure. This group is exposed to changes in the independent variable being tested. The values of the independent variable and the impact on the dependent variable are recorded.

### Which is an example of a controlled experiment?

A Simple Example of a Controlled Experiment A simple example of a controlled experiment may be used to determine whether or not plants need to be watered to live. The control group would be plants that are not watered. The experimental group would consist of plants that receive water.

In an experiment, the independent variable is the variable that is varied or manipulated by the researcher, and the dependent variable is the response that is measured. An independent variable is the presumed cause, whereas the dependent variable is the presumed effect.

### How are dependent, independent and controlled variables graphed?

When graphing the results of your experiment, it is important to remember which variable goes on which axis. The independent variable is graphed on the x-axis. The dependent variable, which changes in response to the independent variable, is graphed on the y-axis. Controlled variables are usually not graphed because they should not change.

What are the different types of independent variables?

In an experiment there are multiple kinds of variables: independent, dependent and controlled variables. What Is an Independent Variable? An independent variable is the variable the experimenter controls.

## What are controlled variables in Pinewood Derby experiment?

Controlled Variable. In the pinewood derby experiment, controlled variables might include the car design; the height, length and smoothness of the ramp; initial placement of the car on the ramp; and the kind of metal in the weight. Sometimes controlled variables are called “constant variables.”. If these variables can’t be kept constant,…