If There Are Five Treatments Under Study, the Number of Pairwise

question 21

Multiple Choice

If there are five treatments under study, the number of pairwise comparisons is ________.

• A) 15
• B) 5
• C) 20
• D) 10

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Definitions:

Shear

A force that causes parts of a material to slide past one another in opposite directions, relevant in understanding earthquake mechanisms.

Compression

The process of reducing the volume of a material by applying pressure, or in geology, the stress state in which rock is pressed together, increasing its density.

Tension

A force that stretches material or causes it to be pulled apart.

Columnar Joints

Vertically oriented, hexagonal columns of rock that form as a result of the cooling and contraction of volcanic or igneous rocks.