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Quick Confidence Interval 2.0

Quick Confidence Interval
In statistics, confidence intervals can be used to express the degree to which sample results are reliable.

Confidence intervals are often stated in terms of a percentage like 90% or 95%. When the sample or population distribution is the Normal (bell-shaped) distribution, the confidence intervals can be represented as a number of standard deviations (?) above or below the sample mean (?).

Moving the slider beneath the graph will...