The mean vitamin C level, in milligrams per liter, for 20 dogs was 7.6 milligrams per liter, with a standard deviation of 2.1 milligrams per liter.

One dog's vitamin C level was not in the normal range. It was 0.9 milligrams per liter, which is a very
low level of vitamin C.

a. If the value 0.9 is eliminated from the data set, what happens to the mean?
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b. If the value 0.9 is eliminated from the data set, what happens to the standard deviation?
Type your response in the space below.