Cook County public safety monitors the number of "driving under the influence" arrests and is interested in the distribution of arrests in the month of December over the last five years. The data are shown next. 
What is the standard deviation?
Definitions:
Borrowing Rate
The interest rate that a financial institution charges a borrower for the use of money.
Principal
The original sum of money borrowed in a loan, or the amount of the loan that has yet to be repaid, excluding interest.
Annual Payments
Regular payments made yearly, often referring to the interest or dividends paid by bonds or stocks.
Compounded Annually
This term refers to the process of calculating interest on both the initial principal and the accumulated interest from previous periods, with the compounding occurring once per year.
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