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time or length could be two different variables depending in what the investigation was based on

Q: What is a variable in relation to an investigation?

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A testable variable is what you test several times for a scientific investigation or medical investigation.

You only change one variable in an investigation because if you change more than one you won't know which change affected the data.

Direct proportionality.

A function is a relation where one variable specifies a single value of another variable. Presenting relation and function can be done different ways including verbal, numerical, algebraic, and graphical.

If none of the variables are constant (or controls) you have no idea which variable or combination of variables caused the effect.

Related questions

A testable variable is what you test several times for a scientific investigation or medical investigation.

Dependent variable

is the factor that i deliberately manipulated in an investigation

dependent variable

You only change one variable in an investigation because if you change more than one you won't know which change affected the data.

the length of time the student left the spoons in the water

I dont know

crime investigation

three

Dependent variables

mutiple things

Which factor does the investigator change during an investigation?