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Definitions from the Web

Confidence Intervals

Description:

Confidence intervals are statistical ranges used to estimate the true value of a population parameter, such as a mean or proportion. They provide a measure of uncertainty and are commonly used to indicate the precision of an estimate. A confidence interval consists of two numbers, the lower bound and the upper bound, which define a range within which the true value is likely to lie.

Sample Sentences:

1. During the experiment, the researchers calculated 95% confidence intervals for the average reaction time. The results showed that the true mean fell between 2.5 to 3.5 seconds.
2. Using a 99% confidence interval, the poll revealed that the proportion of people in favor of the new policy ranges from 42% to 50%, with a margin of error of ±4%.

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