# 21: Confidence Interval for a Mean (With Data) Calculator


CONFIDENCE INTERVAL Calculator WITH DATA

Type in the values from the data set separated by commas, for example, 2,4,5,8,11,2.  Then type in the population standard deviation, $$\sigma$$, and the confidence level, CL, and hit Calculate.  Write the confidence level as a decimal.  For example, for a 95% confidence level, enter 0.95  for CL.

Data:

 $$\sigma$$: CL: $$\bar{x}$$: Lower Bound Upper Bound

21: Confidence Interval for a Mean (With Data) Calculator is shared under a CC BY license and was authored, remixed, and/or curated by Larry Green.