Population Variance Symbol σ²

Population Variance Symbol uses the expression σ². The sequence combines Greek small sigma with superscript two and identifies population variance in statistics. It is a parameter notation, distinct from sample variance s², population standard deviation σ, and a generic squared variable. In formulas, define the population, preserve the superscript, and keep the notation consistent with the surrounding statistical convention. A reader should not have to infer whether σ² refers to a population parameter, an estimator, or a different squared quantity. Copy the complete σ² sequence rather than using a baseline 2. In accessible text, read it as “sigma squared” or “population variance” according to context. The page warns against replacing σ with Latin o, confusing variance with standard deviation, or mixing σ² and s² without explaining the change. Since this is a multi-character expression, verify every code point after export to spreadsheets, PDFs, and web pages. Additional examples for Population Variance Symbol include Unicode sequence for Population Variance Symbol: U+03C3 U+00B2; HTML decimal: σ ²; HTML hexadecimal: σ ². A final review should also prevent Assuming the font used for data-analysis lessons will render population variance symbol exactly like the preview on this page.; Converting σ² into an image even though selectable Unicode text is appropriate for population variance symbol.. The page's FAQ adds: Copy the complete sequence σ² and verify that every character in U+03C3 U+00B2 remains present after pasting.