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What does variables mean?

Updated: 10/19/2022
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13y ago

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rainfall variabilty

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Leonora Medhurst

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1y ago
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11y ago

Something that can be changed in an experiment.

CONTROLLED VARIABLE = something you want to keep the same throughout the experiment. Usually temperature, time of incubation, concentration of the reagents, etc are controlled because if they were to change, it would change the results you get. Thus, without controlled variables, any differences you see in your data may not be due to what it is you were wanting to see. For example, if you were looking at the effect of temperature on how fast water evaporates, then the volume of water you use should be the same in each repetition.

INDEPENDENT VARIABLE = something you want to change, to see if it makes a difference to your results. By changing this, you want to see if it causes a change in results. For example, in the above example, the independent variable would be the temperature - you want to see if an increase in temperature makes the water evaporate faster.

DEPENDENT VARIABLE = what you are actually looking at. In the example given, the dependent variable would be how fast the water evaporates. You don't change this directly, but you are changing the temperature, which in turn changes this.

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13y ago

variables are nothing but a space provided to store values.It is a name for a memory address.system recognises it by memory address and we,as their names....the name of a variable cant be a keyword i.e. words already defined for specific purpose(they carry their own meaning) like int,if,etc..

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13y ago

it changes

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