In Comparing the Difference of the Means Between Two Groups

question 9

Multiple Choice

In comparing the difference of the means between two groups, the null hypothesis can be stated as:

• A)  1 -  2 = 0.
• B)  1 +  2 = 0.
• C)  1 x  2 = 0.
• D)  1 /  2 = 0.

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Definitions:

Central Tendency

A statistical measure that identifies a single value as representative of an entire distribution of data, commonly using the mean, median, or mode.

X-bar Chart

A type of control chart used in statistical process control for monitoring the mean values of a sample over time to detect any significant process changes.

Acceptance Sampling

A statistical quality control method where a random sample of items from a lot is inspected to determine if the entire lot should be accepted or rejected.

Process Control

The practice of managing and maintaining the variables within a production process to ensure the output meets the desired criteria.