Describe the differences between an independent variable, dependent variable, and constants?

Answer 1

The money my brother spends in a week is independent- he has his own job. My son's pocket money depends on how well he does his household chores.

And the cost of my cable subscription each month is constant- even if I just watch free-to-air TV.

Answer 2

In experimental design, a dependent variable (also known as response variable or regressand) 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.In simple terms, the independent variable is said to cause an apparent change in, or simply affect, the dependent variable. In analysis, researchers usually want to explain why the dependent variable has a given value. In research, the values of a dependent variable in different settings are usually compared.

Other terms for the dependent variable are y-variable, outcome variable, and response variable.

In an experimental design, the independent variable (argument of the function) is the variable that 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.

More generally, the independent variable is the thing that someone actively controls/changes; while the dependent variable is the thing that changes as a result. In other words, the independent variable is the “presumed cause,” while dependent variable is the “presumed effect” of the independent variable.

The independent variable is also called the manipulated variable, predictor variable, exposure variable

In mathematics and the mathematical sciences, a constant is a fixed, but possibly unspecified, value. This is in contrast to a variable, which is not fixed.

Answer 3

To give a basic answer, suppose we have the equation

y = x + 3.

Then the constant is 3 -- constant because it does not change at all.

The dependent variable is y -- variable because its value can change, and dependent because it depends upon x.

Then x is the independent variable -- variable because its value can change, and independent because it does not depend upon y, or 3 or anything else.

Answer 4

The based variable is something that _depends_ on yet another variable. usually it incredibly is the "y" variable and is graphed on the vertical axis. as an occasion, once you're graphing place vs. time, place may well be the based variable because of the fact place _depends_ on time (in different words, place is a "function" of time). on the different hand, the autonomous variable would not remember on the different variable and is often the "x" variable (on the horizontal axis). So in our occasion, time is the autonomous variable. A superb in nice condition curve is used to estimate records factors. So once you're doing a technological understanding test, you will possibly be able to plot a gaggle of records factors on a graph which sounds like a gaggle of dots on the graph. you may calculate a superb in nice condition curve which suits in the process the records factors and approximates the relationship between regardless of you're attempting to degree. An occasion may well be once you're doing an test the place you drop a ball from fairly some heights and degree the cost of the ball whilst it hits the floor. From physics you will possibly comprehend that this relationship might desire to be graphed as v = 9.8t. yet no test is appropriate, so there'll be blunders on your records, meaning that your records factors heavily isn't in a appropriate line. so which you will then draw a line of superb in nice condition in the process the standards that approximates that relationship. desire this facilitates!