A college professor collected data on the number of hours spent by his 100 students over the weekend to prepare for Monday's Business Statistics exam.He processed the data by Excel and the following incomplete output is available. 
The coefficient of variation in the data is
Definitions:
Balance
The difference between the total credits and total debits in an account, or the state of having equal weight or power.
Television Repair
The process of diagnosing and fixing problems with televisions, either hardware or software-related issues.
Diagnosed
The process of identifying a disease or condition from its symptoms and tests.
Quick Fix
A speedy yet temporary solution to a problem, often implemented as an immediate but not long-term resolution.
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