Confidence limit

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Confidence limit

Confidence limit (pronunciation: /ˈkɒnfɪdəns ˈlɪmɪt/) is a statistical term used in the field of statistics and data analysis. It refers to the upper and lower values within which a parameter is estimated to lie with a certain level of confidence.

Etymology

The term 'confidence limit' is derived from the English words 'confidence' meaning trust or faith, and 'limit' meaning boundary or end. It was first used in the field of statistics in the early 20th century.

Definition

Confidence limits are the two values that define the range of a confidence interval. They provide a range of values, derived from the statistical data, which is likely to contain the population parameter. The confidence limit includes an upper confidence limit (UCL) and a lower confidence limit (LCL). The UCL is the highest value in the confidence interval, while the LCL is the lowest value.

Related Terms

  • Confidence Interval: A range of values, derived from a data set, which is likely to contain the value of an unknown population parameter.
  • Margin of Error: The range of values above and below the sample statistic in a confidence interval.
  • Statistical Significance: The likelihood that the relationship between two or more variables is caused by something other than chance.
  • Standard Error: A measure of the statistical accuracy of an estimate, equal to the standard deviation of the theoretical distribution of a large population of such estimates.

See Also

External links

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