Difference between revisions of "TMeanEstimate Command"

Revision as of 06:00, 23 July 2011

TMeanEstimate[<List of Sample Data>,<Level>]: Calculates a T confidence interval estimate of a population mean using the given sample data and confidence Level. Results are returned in list form as {lower confidence limit, upper confidence limit}.

TMeanEstimate[<Sample Mean>,<Sample Standard Deviation>,<Sample Size>,<Level>]: Calculates a T confidence interval estimate of a population mean using the given sample statistics and confidence level. Results are returned in list form as {lower confidence limit, upper confidence limit}.

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 ;TMeanEstimate[<Sample Mean>,<Sample Standard Deviation>,<Sample Size>,<Level>]
 : Calculates a T confidence interval estimate of a population mean using the given sample statistics and confidence level. Results are returned in list form as {lower confidence limit,  upper confidence limit}.
- {{Note| 1= This interval has definition:   '''''sample mean ± t* SE''''', where
-:: n = sample size
-:: SE = sample standard deviation / sqrt(n)
-:: t* =  critical value for given confidence ''Level'' and T distribution with degrees of freedom = n-1 .
-}}