A researcher computed the mean, the median, and the standard deviation for a set of performance scores. If7 were to be added to each score, which of these three statistics would change?  Pick.
A) The mean only B) The median only C) The standard deviation only D) The mean and the standard deviation E) The mean and the median
The correct answer is The mean and the median.
<result>E</result>
A researcher computed the mean, the median, and the standard deviation for a set of performance scores. If7 were to be added to each score, which of these three statistics would change?