wat is an independent variable and a dependent variable????plz help :~)?

Answer 1

As stated in the dictionary:

dependent variable - (in an experiment) the event studied and expected to change when the independent variable is changed.

independent variable - A manipulated variable in an experiment or study whose presence or degree determines the change in the dependent variable.


So for example if you want to test the effects of an acid on the pH of water, then you would expect the pH of the water to change according to the type of acid placed in the water.

The pH of water, in this case, is the dependent variable or the substance that is being changed.
The type of acid is the independent variable because it is the one causing a change in the water.

Answer 2

They're pretty much by definition. An 'independent' variable is a variable which can be assigned any value (from a set of values called it's 'domain'), and a dependent variable is a variable whose value is calculated (usually based on the value of an independent variable) by some specified function or algorithm. (Just for completeness, the range of values a dependent variable can assume is called it's 'range'.)

Look at
y = 3x + 5
in this case, x is the independent variable and y is the dependent variable. Now check out
x = (y-5)/3
This really is the same equation of the same straight line, only now y is the independent variable and x is the dependent variable.

HTH

Doug

Answer 3

In an experimental design, the independent variable (also called the explanatory variable) is the variable which is manipulated or selected by the experimenter to determine its relationship to an observed phenomenon (the dependent variable). In other words, the experiment will attempt to find evidence that the values of the independent variable determine the values of the dependent variable (which is what is being measured). The independent variable can be changed as required, and its values do not represent a problem requiring explanation in an analysis, but are taken simply as given. In experimental design, a dependent variable is a factor whose values in different treatment conditions are compared. That is, the experimenter is interested in determining if the value of the dependent variable varies when the values of another variable – the independent variable – are varied, and by how much.

Answer 4

An independent variable is the variable that can (and is) manipulated. The dependent variable changes based on the value and manipulation of the independent variable.

Answer 5

Dependent variable as its name tells is the one that depend of the other. Example, if you are measuring the distance that a particle moved in space in any period of time, time would be an independant variable and distance the dependant one.

Answer 6

independent is the x value, because it doesn't depend on anything, dependant is the y-value, it depends on the independent value. It seems comfusing..read it carefully & slowly..you'll get it =]]

Answer 7

x and