A small company has five employees who missed work during a certain month. The number of days missed were: 1, 1, 2, 4, 7.What is the :

mean =

variance =

standard deviation =

A day-care center cares for ten children. Their ages are 1, 1, 2, 2, 2, 3, 3, 4, 6, 6.

Construct a histogram that represents the distribution of ages.

What is the:

mean =

variance =

standard deviation =