To compare the cost of three shipping methods,a random sample of four shipments is taken for each of three firms.The cost per shipment is shown below. 
The degrees of freedom for the total sum of squares in a one-factor ANOVA would be
Definitions:
Conclusions Concerning Cause
Final judgments or decisions reached by reasoning, especially about why something happens or the reason for a particular effect.
Practical or Ethical Reasons
Justifications for decisions or actions based on practicality, including effectiveness and convenience, or ethical considerations, involving moral principles.
Standard Deviation
A statistical measure that quantifies the amount of variation or dispersion of a set of data values around the mean.
Descriptive Statistics
Statistical techniques used to describe and summarize the basic features of data in a study.
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