Get null hypothesis examples. Learn the difference between the null hypothesis and alternative hypothesis.

# Scientific Method

Get the definition of a confounding variables. See examples of confounding variable and learn why correlation is not causation.

## What Is a Confounding Variable? Definition and Examples

A control variable is any factor that is controlled or held constant in an experiment.

## What Is a Control Variable? Definition and Examples

The independent and dependent variables are key to any scientific experiment, but how do you tell them apart? Here are the definitions of independent and dependent variables, examples of each type, and tips for telling them apart and graphing them. Independent Variable The independent variable is the factor the researcher […]

## Independent and Dependent Variables Examples

The independent and dependent variables are the two main types of variables in a science experiment. A variable is anything you can observe, measure, and record. This includes measurements, colors, sounds, presence or absence of an event, etc. The independent variable is changed to test its effects on the dependent […]

## Difference Between Independent and Dependent Variables

The dependent variable is the variable that is studied and measured in response to changes in the independent variable. In other words, it depends on the independent variable. It is also known as the responding variable or measured variable. Dependent Variable Examples For example, say you want to know whether […]

## Dependent Variable Definition and Examples

The independent variable is the variable that is controlled or changed in a scientific experiment to test its effect on the dependent variable. It doesn’t depend on another variable and isn’t changed by any factors an experimenter is trying to measure. The independent variable is denoted by the letter x in an […]

## What Is an Independent Variable? Definition and Examples

A hypothesis is a prediction of the outcome of a test. It forms the basis for designing an experiment in the scientific method. A good hypothesis is testable, meaning it makes a prediction you can check with observation or testing. Here are different hypothesis examples. Null Hypothesis Examples The null […]

## Hypothesis Examples

This scientific method quiz tests how well you understand the essential steps of the scientific method and how to perform an experiment.