TABLE 12-10 One Criterion Used to Evaluate Employees in the Assembly Section

question 54

Multiple Choice

TABLE 12-10
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.

-Referring to Table 12-10, which test would be used to properly analyze the data in this experiment to determine whether there is a relationship between defect rate and years of experience?

• A) X² test for independence
• B) X² test for differences among more than two proportions
• C) Wilcoxon rank sum test for independent populations
• D) Kruskal-Wallis rank test

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Definitions:

Lucy

The common name given to the Australopithecus afarensis skeletal remains discovered in Ethiopia in 1974, which are among the oldest and most complete hominin fossils found to date.

Classic Human

Refers to idealized concepts or archetypal characteristics of humans, often related to anatomy, behavior, or culture in historical contexts.

Spinal Shape

The physical curvature and alignment of the vertebral column, important for posture, movement, and overall health.

Biped

An organism that uses two legs for walking.