the most common cause of an outlier is an error in the recording of data.
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0s are not the outlier values
The answer depends on the nature of the outlier. Removing a very small outlier will increase the mean while removing a large outlier will reduce the mean.
there is no outlier because there isn't a data set to go along with it. so theres no outlier
it messes up the mean and sometimes the median. * * * * * An outlier cannot mess up the median.
Yes, any data point outside thestandard deviation its an outlier