When the scores for a recent Chemistry exam were calculated,the mean was 60 and the median was 65.Later the professor discovered that one score had been recorded incorrectly; it had been entered into the computer as a 5,instead of as a 50.When this correction is made,

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The mean will be affected because one score (which was originally recorded as a 5) will now be recorded as 50, which is a big difference. This will increase the overall sum of the scores and therefore change the mean. However, the median will remain the same. The median is the middle score when all the scores are put in order, and one outlier (the 5) being changed to a 50 will not affect the order of the rest of the scores. Therefore, only the mean will be affected, and the median will stay the same.

When the Scores for a Recent Chemistry Exam Were Calculated,the