The Number of Degrees of Freedom for a Contingency Table

question 163

Multiple Choice

The number of degrees of freedom for a contingency table with r rows and c columns is:

• A)r + c
• B)rc
• C)(r − 1)(c − 1)
• D)None of these choices.

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Definitions:

Low Watt Bulbs

Light bulbs that are designed to consume less electrical power, often leading to energy savings and reduced operational costs.

MTBF

Mean Time Between Failures; a reliability measure of the average time a product or system operates before failing.

Component Reliability

The probability that an individual part or component of a system performs its intended function under specified conditions for a designated period of time.

Preventive Maintenance

Regular and systematic inspection, cleaning, and replacement of worn parts, materials, and systems to prevent sudden failure and downtime.