Difference between revisions of "TMeanEstimate Command"
From GeoGebra Manual
m (1 revision: statistics commands) |
|||
| Line 3: | Line 3: | ||
{{command|statistics}} | {{command|statistics}} | ||
;TMeanEstimate[<List of Sample Data>,<Level>] | ;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>] | ;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 . | ||
| + | }} | ||
Revision as of 01:40, 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}.
Note: 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 .
