INTRODUCTION
RESEARCH AND SCIENTIFIC METHODS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How can you create a ‘fair test’?
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By changing one factor and keeping all the other conditions constant
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By changing some variables but keeping one constant
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But repeating the experiment more than 10 times
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By allowing each scientist to record the results separately
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Explanation:
Detailed explanation-1: -A controlled experiment is a scientific test done under controlled conditions, meaning that just one (or a few) factors are changed at a time, while all others are kept constant.
Detailed explanation-2: -An experiment usually has three kinds of variables: independent, dependent, and controlled. The independent variable is the one that is changed by the scientist. To insure a fair test, a good experiment has only ONE independent variable.
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