To compare the cost of three shipping methods,a firm ships material to each of four different destinations over a six-month period.The average cost per shipment is shown below. 
Which test would be appropriate?
Definitions:
Hippocampus
A brain structure deeply involved in memory formation, particularly converting short-term memory to long-term memory, and spatial navigation.
New Memories
The formation of new associative connections in the brain, allowing for the storage and recall of new experiences or information.
Nucleus Accumbens
A region in the brain involved in the reward circuit, associated with motivation, pleasure, and addiction.
Reward Center
Areas in the brain, such as the nucleus accumbens, which are involved in the reinforcement of behaviors by producing feelings of pleasure.
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