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Statistics LibreTexts

18: Confidence Interval for a Mean Calculator With Statistics (Sigma Unknown)

  • Page ID
    8345
  • CONFIDENCE INTERVAL Calculator WITH STATISTICS (Sigma unknown)

    Fill in the sample size (n), the sample mean (\(\bar{x}\)), the sample standard deviation (s), and the confidence level (CL).  Write the confidence level as a decimal.  For example, for a 95% confidence level, enter 0.95  for CL.  Then hit Calculate and assuming the population is normally distributed, the confidence interval will be calculated for you.

    n:   \(\bar{x}\):   s:   CL:  
    Lower Bound Upper Bound