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Statistics of Answer Selection

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In a recent study, a researcher found that there is a negative correlation (r = -0.67) between changing your first answer on a standardized achievement test and test scores. Apparently, according to the study, students are changing the correct answers for incorrect ones. Based on this study, should you consider changing your answers if you are taking a standardized achievement test? Please think about the meaning of correlation and how you might use this information.

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Solution Summary

This solution explains the relationship in a negative correlation and advises not to changes one's answer when taking a standardized achievement test.

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In a recent study, a researcher found that there is a negative correlation (r = -0.67) between changing your first answer on a standardized achievement test and test scores. Apparently, according to the study, students are ...

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Gaurav Agarwal, MS
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  • BE, Bangalore University, India
  • MS, University of Wisconsin-Madison
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