# Quick Answer: Which Variable Do You Keep The Same?

## What are two control variables?

Variables are just values that can change; a good experiment only has two changing variables: the independent variable and dependent variable.

A control variable is another factor in an experiment; it must be held constant.

In the plant growth experiment, this may be factors like water and fertilizer levels..

## What do you keep the same in an experiment?

The number of dependent variables in an experiment varies, but there can be more than one. Experiments also have controlled variables. … So, you should keep all the other variables the same (you control them) so that you can see only the effect of the one variable (the independent variable) that you are trying to test.

## Which variable is the one you control?

independent variableThe manipulated or independent variable is the one that you control. The controlled variable is the one that you keep constant. The responding variable or variables is what happens as a result of the experiment (i.e. it’s the output variable).

## Is age a control variable?

example we are going to use age as the control variable. … the relationship between the two variables is spurious, not genuine.) When age is held constant, the difference between males and females disappears.

## How do you control a variable?

Essentially, a control variable is what is kept the same throughout the experiment, and it is not of primary concern in the experimental outcome. Any change in a control variable in an experiment would invalidate the correlation of dependent variables (DV) to the independent variable (IV), thus skewing the results.

## Is the dependent variable the one you change?

An easy way to think of independent and dependent variables is, when you’re conducting an experiment, the independent variable is what you change, and the dependent variable is what changes because of that. You can also think of the independent variable as the cause and the dependent variable as the effect.

## What is the constant variable?

A variable whose value cannot be changed once it has been assigned a value. See also dependent variable, independent variable. The snow was a constant variable to factor in when we went outside, or to the store because it cause us to fall. …

## What is the variable that is measured?

A dependent variable is what you measure in the experiment and what is affected during the experiment. The dependent variable responds to the independent variable. It is called dependent because it “depends” on the independent variable.

## What variable should be kept constant?

There must be an independent variable, which changes throughout the course of an experiment; a dependent variable, which is observed and measured; and a controlled variable, also known as the “constant” variable, which must remain consistent and unchanging throughout the experiment.

## What are the 3 types of variables?

A variable is any factor, trait, or condition that can exist in differing amounts or types. An experiment usually has three kinds of variables: independent, dependent, and controlled.

## What are 3 controlled variables?

Examples of Controlled Variables If a temperature is held constant during an experiment, it is controlled. Other examples of controlled variables could be an amount of light, using the same type of glassware, constant humidity, or duration of an experiment.