If a Stratified Random Sample Is to Be Conducted, Which

question 155

Multiple Choice

If a stratified random sample is to be conducted, which of the following is true?

• A) The population will be broken down into subgroups called strata.
• B) Each subgroup should contain items that are homogeneous with respect to the characteristic of interest.
• C) If effective, the total required sample size should be less than that which would be needed if a simple random sample were selected.
• D) All of the above.

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Definitions:

Compressive Strength

The capacity of a material or structure to withstand loads that tend to reduce size, measured by the maximum stress it can withstand without failure.

Control Chart

A graphical tool used in process control to display how a process changes over time, highlighting variations that may indicate problems.

Overall Mean

The average value calculated from the entire dataset, encompassing all observations or measurements.

Inside Diameter

The distance measured across the interior of a circular object or hole, important in manufacturing and engineering for fitting components.