Question: Here are 10 test scores: 73, 74, 76, 77, 78, 79, 80, 80, 82, 84. The mean of these scores is 78.3. Does this set have an outlier and, if so, how does removing it affect the mean?
Answer: No it doesnt and if you did have an outlier it would greatly affect the mean because if there was an outlier the mean would move closer to the outlier.
