By 2015, 81.6% of Americans Lived in ______

question 4

Multiple Choice

By 2015, 81.6% of Americans lived in ______.

• A) megacities
• B) urban areas
• C) urban clusters
• D) rural areas

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Definitions:

Mean

The mathematical calculation where you add all the numbers in a set and divide by the number of elements to find the average.

Mound-Shaped Distribution

A data distribution that is symmetric and bell-shaped, often resembling the normal distribution but not necessarily having its mathematical properties.

Standard Deviation

A measure of the dispersion or variability within a set of numerical data, indicating how spread out the values are from the mean.

Tchebysheff's Theorem

A statistical rule stating that for any dataset, regardless of distribution, a certain minimum percentage of values must lie within a specified number of standard deviations from the mean.