Consider a population with data values of 
(See the Excel Data File.) The population standard deviation is the closest to ________.
Definitions:
Compressive Strength
The capacity of a material or structure to withstand loads tending to reduce size, often measured as the maximum stress it can endure without failure.
Injection Molding
The method of creating parts through the injection of molten substances into a mold.
Capability Index
A statistical tool used to determine the capability of a manufacturing process to meet its specified limits.
Process
A series of actions or steps taken in order to achieve a particular outcome or result.
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