At their​ inauguration, the ages of the first six​ (out of a current number of​ 45) presidents of a certain country were 57,61​,62​,65,61​, and 52. Complete parts a and b below. a. Find the mean age at the inauguration of the first six presidents.​(Round to the nearest tenth as​ needed.)   b. Find the standard deviation of the ages at the inauguration of the first six presidents.​(Round to the nearest tenth as​ needed.)

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At their​ inauguration, the ages of the first six​ (out of a current number of​ 45) presidents of a certain country were 57,61​,62​,65,61​, and 52.

Complete parts a and b below.
a. Find the mean age at the inauguration of the first six presidents.
​(Round to the nearest tenth as​ needed.)
 
b. Find the standard deviation of the ages at the inauguration of the first six presidents.
​(Round to the nearest tenth as​ needed.)

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