Three randomly chosen pieces of four types of PVC pipe of equal wall thickness are tested to determine the burst strength (in pounds per square inch) under three temperature conditions,yielding the results shown below. 
Which test would be appropriate?
Definitions:
Insider Trading
Engaging in stock exchange transactions for personal benefit by exploiting confidential information, an act considered illegal.
Securities Exchange Act
A U.S. law regulating the trading of securities, aimed at protecting investors and maintaining fair and efficient markets.
Tipper
An individual who provides privileged, non-public information to another person, typically about securities trading.
Tippee
A person who receives inside information.
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