Get a sample of 4 people at ACM and give their ages. Note: If you do not have a sample of 4 ACM students, then make them up. Not all 4 ages can be the same.

Person 1 is years old. 

Person 2 is  years old.

Person 3 is years old. 

Person 4 is  years old.

What is the mean of these ages?  

What is the standard deviation of these ages?  

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