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Earn +20 ptsQ: What is a variable in relation to an investigation?
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What is a testable variable?
A testable variable is what you test several times for a scientific investigation or medical investigation.
Why is only variable changed in an 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.
What is A Relation In Which A Variable Is A Multiple Of The Other?
Direct proportionality.
What are the different ways of presenting relation and function?
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.
Why cant you draw a conclusion about the effect of one variable in an investigation when the other key variables are not controlled?
If none of the variables are constant (or controls) you have no idea which variable or combination of variables caused the effect.
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