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What does a 90% confidence interval mean / lower & upper bounds mean?

April 26, 2017bounds confidence interval lower mean Upper

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What does a 90% confidence interval mean / lower & upper bounds mean?

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A 90% confidence interval is a statistical term that means there is 90% certainty that the true answer lies within the listed upper and lower percentages. It is based on mathematical models used for statistics. For more information see A Basic Explanation of Confidence Intervals http://www.census.gov/hhes/www/saipe/techdoc/stcty/ci.