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How does the outlier affect the mean and median?
The mean is better than the median when there are outliers.
Who has performed better a standard deviation of 1 or standard deviations of 2 than the mean?
It depends on whether it is 1 SD or 2 SD above the mean or below the mean. It also depends on which is better. Sometimes being below the mean is good (time to complete a race) whereas sometimes higher than the mean is better (score in an exam).
Why is the median better than the mean?
It shows the middle number in a number group rather than the average score in a number group. It isn't exactly better than the mean because they are often very close numbers. But at other times, one number in a group messes up the mean if it is too low or too high, so you can get a better answer by finding out the median.
What does above average mean?
Above average is meant say that you are better than average. Or in other words, you are better than normal. This term is usually used in the education field and IQ tests.
What does to be equal to mean?
The equal sine means the sum or the answer. And it also means the you are the same as others you are no better than them.
