The control group of an experiment is a group that is not exposed to the independent variable and thus serves as a benchmark for which to compare the results of the experimental group to.

What is meant by a positive control in an experiment? A positive control in an experiment is the group or sample with a treatment that has a known outcome.

In this lesson, discover what is an experimental group, compare the difference between an experimental group and a control group, and examine two...

Understand what positive and negative controls are in an experiment. Learn the purpose of a negative control group, and study example negative control groups.

In science, a variable is any item, factor, or condition that can be controlled or changed. There are three types of variables in scientific experiments, but we will define them later in the lesson.

Learn about variables in science and how they can be changed or studied in an experiment. Discover the types of variables, such as independent variables, dependent variables, and controlled variables.

Compare the independent variable and dependent variable in research. See other types of variables in research, including confounding and extraneous variables.

The system bus includes three types of computer busses: the Address Bus, the Data Bus, and the Control Bus. These buses provide the address or location, information, the data, and the computer's ...

Learn about different forms of government, including democratic and non-democratic governments. Find real-world examples of specific types of governments and regimes.

Learn how an Arithmetic Logic Unit (ALU) works within a computer processing unit or CPU. Discover the meaning of an ALU, what it does, and why it is important.