Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Types of Variables
Name: Timmy
Status: student
Age: 13
Location: N/A
Country: N/A
Date: 1999-2001


Question:
What is a controlled variable - This likely refers to the independent variable, the variable that is manipulated in a systematic way by the experimenter.


Replies:
What is a uncontrolled variable - I have not heard of this term, but it may refer to what is sometimes called a confounding variable - a variable that may introduce errors in the results. Experimenters try to eliminate confounding variables as much as possible.

What is a dependent variable - This is the variable that is being watched and/or measured. We wonder if or how it is affected by the independent variable.

What is a independent Variable - This is the variable manipulated by the experimenter. The name is a little misleading. It is not truly independent, but rather carefully controlled (related to you first term).

Larry Krengel



Click here to return to the General Topics Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (help@newton.dep.anl.gov), or at Argonne's Educational Programs

NEWTON AND ASK A SCIENTIST
Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory