Comparing Data from 2009-2010 to That from 2011-2012, the Percent

question 91

Multiple Choice

Comparing data from 2009-2010 to that from 2011-2012, the percent of two- to five-year-olds who were obese _____, while the percent of U.S. 6- to 11-year-olds _____.

• A) increased; decreased
• B) decreased; increased
• C) increased; stayed the same
• D) decreased; stayed the same

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Definitions:

Mean Difference

A statistical measure that represents the average difference between two sets of data points.

Statistical Significance

A measure that indicates how likely a result obtained from a study or experiment is not due to chance.

Sampling Error

Difference between results derived from testing an entire group of events or individuals, and results derived from testing a subset of the group.

Trend Analysis

The process of comparing business data over time to identify any consistent results or trends that can be used to make business decisions or predictions.