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# What is a manipulated variable?

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### Quick Answer

**The manipulated variable in an experiment is the independent variable; it is not affected by the experiment's other variables.** HowStuffWorks explains that it is the variable the experimenter controls. When there are control and experimental groups, the manipulated variable is the treatment supplied to the experimental group and denied the control group.

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When a scientist graphs the results of an experiment, he graphs the manipulated variable on the x-axis of the graph. One common manipulated variable is time. The scientist controls the time at which he makes the measurements. The y-axis represents the response or dependant variable. Temperature is a common response variable.

Because it is easy to confuse variables in the experiment, About.com offers the mnemonic DRY MIX to help students. It translates: dependant, response, y-axis; manipulated, independent, x-axis. Another way to help keep these values from being confused is through remembering that the independent variable is the "I do" variable.

In addition to manipulated variables and response variables, experiments often include controlled and extraneous variables. Controlled variables are those which the experimenter attempts to keep the same for both groups. Extraneous variables often change the outcome of the experiment in an accidental or unanticipated way. While the experimenter does not graph these variables, it is important for him to keep a record of them in his notes.

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Q:
## What is the formula for calculating true position?

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Full Answer >**The formula for calculating true position is true position tolerance = 2 x SQRT(XVAR**In this instance, SQRT refers to a square root, XVAR refers to the amount of deviation from the basic dimension found in the X-axis, and YVAR refers to the amount of deviation from the basic dimension found in the Y-axis.^{2}+ YVAR^{2}).Filed Under: -
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## What is the formula to calculate price per share?

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Full Answer >**Calculate price per share by dividing the market value per share by the earnings per share.**This is also known as the price-earnings ratio or P/E ratio.Filed Under: -
Q:
## How did Isaac Newton invent calculus?

A:Calculus was developed independently by both Isaac Newton and Gottfried Leibniz during the later part of the 1600s. For Newton, calculus was primarily a tool he needed for explaining the motion of the planets. It would be difficult to say precisely how he developed his ideas because he was secretive about his methods, but it certainly grew out of his understanding of the laws of motion and acceleration.

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## How do I solve piecewise functions?

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Full Answer >**Piecewise functions are solved by graphing the various pieces of the function separately.**This is done because a piecewise function acts differently at different sections of the number line based on the x or input value.Filed Under: