Paper 1 · Research Aptitude
A statement that predicts the cause-and-effect relationship between variables is known as the
ANull hypothesis
BExperimental hypothesis ✓ Correct
CIndependent variable
DDependent variable
Correct answer: (B) Experimental hypothesis — A statement predicting a cause-and-effect relationship is the experimental hypothesis, so that is the answer.
Explanation
★A statement predicting a cause-and-effect relationship is the experimental hypothesis, so that is the answer.
★The experimental, or alternative, hypothesis predicts that the treatment will produce an effect.
★So it states the expected cause-and-effect relationship between the variables.
★The null hypothesis, by contrast, predicts no relationship or no effect.
★The independent variable is the manipulated cause, not a statement of prediction.
★The dependent variable is the measured effect, so the prediction of cause and effect is the experimental hypothesis.
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