Instruction 15-4
One Criterion Used to Evaluate Employees in the Assembly

question 49

Multiple Choice

Instruction 15-4
One criterion used to evaluate employees in the assembly section of a large factory is the number of defective pieces per 1,000 parts produced.The quality control department wants to find out whether there is a relationship between years of experience and defect rate.Since the job is repetitious,after the initial training period any improvement due to a learning effect might be offset by a loss of motivation.A defect rate is calculated for each worker in a yearly evaluation.The results for 100 workers are given in the table below.
Years Since Training Period
$$\begin{array} { | r | l | c | c | c | } \hline & & < \mathbf { 1 } \text { Year } & \text { 1 - 4 Years } & \text { 5 - 9 Years } \\\hline & \text { High } & 6 & 9 & 9 \\\hline \text { Defect Rate: } & { \text { Average } } & 9 & 19 & 23 \\\hline & \text { Low } & 7 & 8 & 10 \\\hline\end{array}$$
-Referring to Instruction 15-4,which test would you use to properly analyse the data in this experiment to determine whether there is a relationship between defect rate and years of experience?

• A)?² test for differences among more than two proportions.
• B)?² test for independence.
• C)?² test for difference between two proportions.
• D)None of the above.

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Definitions:

Cognitive Dissonance

The psychological discomfort experienced when holding two or more conflicting beliefs, ideas, or values at the same time.

Displays

Gestures that are used like nonverbal punctuation marks, such as pounding your fist on the table.

Facial Expressions

The movements or positions of the face that convey emotions, intentions, or reactions, serving as a powerful form of nonverbal communication.

Grapevine

A network within the informal organization that communicates incomplete, but usually somewhat accurate information.