A soap manufacturer is experimenting with several formulas of soap powder. Three of the formulas were selected for further testing by a panel of homemakers. The ratings for the three formulas are as follows: 
What is the number of degrees of freedom?
Definitions:
Medicine
The applied science of healing or treating diseases to enhance an individual’s health and well-being.
Industrial Mental Health
The study and practice of maintaining and improving mental health in the workplace.
Inputs into Outputs
The process of transforming resources or inputs (such as labor, materials, and information) into products, services, or results (outputs).
Internal Components
The elements or parts within a system, organization, or device that function together to ensure its operation or effectiveness.
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