Outlier Calculator (IQR And Z Score Fences)
Outlier Calculator (IQR And Z Score Fences): a planned Super Calculator tool. Stub page: the tool, its formula and a worked example are not published yet.
Outlier Calculator (IQR And Z Score Fences) is a planned calculator in the mathematics section of Super Calculator, covering descriptive and summary statistics.
What this calculator will compute
Inputs: data column, method and multiplier or threshold.
Outputs: outlier list, lower and upper fences, cleaned dataset and summary statistics with and without outliers.
Formula, recorded as scope and not yet verified against a primary source: Tukey fences flag values outside Q1 - 1.5IQR and Q3 + 1.5IQR, with extreme outliers at 3.0IQR. Alternatives include |z| above 3, the modified z score using the median absolute deviation (0.6745(x - median)/MAD above 3.5), and Grubbs’ test for a single outlier.
Status
This page is a stub. The calculator is not built, no figure on this page has been verified against the authority that sets it, and nothing here should be used to make a decision. The page exists so that the site structure is complete and so that articles can link this concept on first mention.
The stub carries noindex, nofollow and is excluded from the sitemap.