parent nodes: Basic Statistics | Bigger Smaller or not equal test | Box-Cox transformation | Choosing a statistical test | Control Chart | Cp Cpk % out of tolerance | Design of experiments (DOE) | Generate Distribution | Graphs | index | IndexBasicStat | Indexch | IndexNews | indexnl | Mean | Measuring and data collection | Normal Distribution | Response graphs | Result table | Sigma level | Sitemap | Statistical process control (SPC) | Statistical software | Support | t-test | Variation F-test | Weibull analysis | Whatsnew
Standard deviation (STDEV)
Calculates the STDEV (
) of the data-set. The STDEV is an indication of the variation of the data. A small STDEV means a small variation and the data points are close to the Mean
The bigger the STDEV the bigger the variation in the data-set.
95% confidence interval for STDEV
To get the Confidence interval click on the graph of the data-set and it will be visible in the graph pop-up.
n = n
s = STDEV
The STDEV of samples in data-set A is 1.1136, this is visible in row STDEV
of the result array.