A company is studying the number of monthly absences among its 125 employees. The following probability distribution shows the likelihood that people were absent 0, 1, 2, 3, 4, or 5 days last month. 
What is the standard deviation of the number of days absent?
Definitions:
Abortion
The medical or surgical termination of a pregnancy before the fetus can survive outside the uterus.
Professional Ethics
A framework of evaluating conduct applicable to members of a given profession.
Technical Knowledge
Understanding of and expertise in specialized fields, particularly those involving technology or specific skill sets.
Ethical Dilemma
A situation where a person must choose between two or more morally correct actions that conflict.
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