In a Recent Round of Layoffs in a Company, the Percent

question 8

Multiple Choice

In a recent round of layoffs in a company, the percent of employees 50 and older who were laid off was much higher than the percent younger than 50 who were laid off. However, when the data were analyzed separately in each job category, the percent of employees 50 and older who were laid off was lower than the percent of employees younger than 50 who were laid off in each job category. This reversal of direction of the association between age and being laid off, when job category is taken into account, is called:

• A)Simpson's paradox.
• B)least-squares regression.
• C)negative association.
• D)a residual plot.

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Definitions:

Populations

Groups of individuals of the same species living and interbreeding within a given area.

Area

is a measure of the extent of a two-dimensional surface or shape, expressed in square units.

Biosphere

The global ecological system integrating all living beings and their relationships, including their interaction with the elements of the lithosphere, hydrosphere, and atmosphere.

Inhabited

Being lived in or occupied by people, animals, or other organisms.