what is the independent variable in this study?

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what is the independent variable in this study?

Men with symptons of impotence received either viagra or a placebo. is the independent variable men, placebo,viagra, or symptoms of impotence?

2007-02-14 14:06:12 · 1 answers · asked by kristina r 2 in Science & Mathematics ➔ Physics

1 answers

It's the type of medicine they received.

(Independent variable is the thing the experimenter changes to see what will happen. Dependent variable is what happens.)

2007-02-14 14:09:46 · answer #1 · answered by ecolink 7 · 1⤊ 0⤋