Why Has the Gap Between Rich and Poor Increased So

question 29

Essay

Why has the gap between rich and poor increased so much in the United States since 1945?

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Definitions:

Population Proportions

The ratio of a specific subgroup's size to the total population size.

Z-value

A uniform measure displaying the number of standard deviations a data point lies away from the average.

Binomial Proportions

The ratios that represent the outcomes of processes that follow binomial distribution, often involving two possible outcomes.

Population Mean

The average value of a population attribute, representing the central point of a data set for the entire population.