CONNECTIVE TISSUE GLAND
ENDOCRINE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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number of correct answers
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the length of the sets-5 numbers and 5 letters
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height of the people being tested
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None of the above
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Detailed explanation-1: -A controlled variable in an experiment is the one that the researcher holds constant or controls. Control variables are the variables or elements that researchers strive to keep constant throughout their research so that they would not influence the outcomes.
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.
Detailed explanation-3: -The independent variable is the one which we (the experimenters) change. The dependent variable is the one which changes because we change the independent variable. A control variable is a variable which is deliberately kept the same.
Detailed explanation-4: -Variables are important to understand because they are the basic units of the information studied and interpreted in research studies. Researchers carefully analyze and interpret the value(s) of each variable to make sense of how things relate to each other in a descriptive study or what has happened in an experiment.