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2007-01-02 04:46:20 · 5 answers · asked by CAROLYN R 1 in Education & Reference Homework Help

5 answers

x is independent, y is dependent

2007-01-02 05:12:16 · answer #1 · answered by Anonymous · 0 1

Variables & Hypothesis
Variables

Scientists use an experiment to search for cause and effect relationships in nature. In other words, they design an experiment so that changes to one item cause something else to vary in a predictable way.

These changing quantities are called variables, and an experiment usually has three kinds: independent, dependent, and controlled.

The independent variable is the one that is changed by the scientist. In an experiment there is only one independent variable.

As the scientist changes the independent variable, he or she observes what happens.

The dependent variable changes in response to the change the scientist makes to the independent variable. The new value of the dependent variable is caused by and depends on the value of the independent variable. For example, if you open a faucet (the independent variable), the quantity of water flowing (dependent variable) changes in response--the water flow increases. The number of dependent variables in an experiment varies, but there is often more than one.

Experiments also have controlled variables. Controlled variables are quantities that a scientist wants to remain constant, and he must observe them as carefully as the dependent variables. For example, if we want to measure how much water flow increases when we open a faucet, it is important to make sure that the water pressure (the controlled variable) is held constant. That's because both the water pressure and the opening of a faucet have an impact on how much water flows. If we change both of them at the same time, we can't be sure how much of the change in water flow is because of the faucet opening and how much because of the water pressure. Most experiments have more than one controlled variable. Some people refer to controlled variables as "constant variables."

2007-01-02 04:49:12 · answer #2 · answered by redunicorn 7 · 1 1

Independent variable = the variable that you change

"I"ndependent

**represented on the X-axis in a graph


dependent variable = the variable that you measure due to the change (the independent variable)

it DEPENDS on the independent variable

** represented on the Y-axis in a graph





^^ easy way to remember IV and DV :)

2007-01-03 12:09:57 · answer #3 · answered by lana_dog 2 · 0 0

for a simple explanation, the independent variable is the one that you change to get results. for example, if you were testing the effect of fertilizer on plants, the thing that you change is the amount of fertilizer. so that is your independent variable.

the dependent variable is the one that depends on the other variable. so in the same experiment, the effect of the ind. variable is how tall the plants grow. so the dependent variable is the height of the plants. just remember that independent = cause, dependent = effect

2007-01-02 05:43:55 · answer #4 · answered by hersheykiss8908 2 · 1 1

Variable potential "it varies" or "it adjustments". working example: a variable x could have any values if x+a million is the expression. x may well be any fee. If y = x + a million, x could have any fee and y can remember on what ever the fee x takes. you could inspect it that way. So y can remember on x, and x may well be autonomous and take any values. i'm hoping than helped.

2016-12-15 07:07:49 · answer #5 · answered by ? 4 · 0 0

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