The Following Questions Refer to the Graph Below

question 2

Multiple Choice

The following questions refer to the graph below.

Source: Federal Bureau of Labor Statistics
Union Membership Rates
-Which of the following would most likely account for the trends seen in the graph?

• A) An acceptance of New Deal policies that legalized and supported union activity
• B) Increased focus on small-scale, subsistence agriculture after 1980
• C) The elimination of many manufacturing jobs after World War II
• D) U.S. military involvement in Iraq and Afghanistan after 2001

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Definitions:

Independence

A situation in statistics where two events are not influenced by each other, and the occurrence of one does not affect the probability of occurrence of the other.

Chi-Square Statistic

A statistical measure used to evaluate the differences between observed and expected frequencies in categorical variables.

Observed Frequencies

The number of times a particular value or event actually occurs in a dataset.

Expected Frequencies

In statistical analysis, these refer to the counts predicted by a probability model or theoretical distribution, used in the comparison of observed data for goodness-of-fit tests.