Plus–minus sign - Wikipedia
https://en.wikipedia.org/wiki/Plus%E2%80%93minus_sign
OverviewHistoryUsageEncodingsSimilar charactersSee alsoThe plus–minus sign, ±, is a symbol with multiple meanings: • In mathematics, it generally indicates a choice of exactly two possible values, one of which is obtained through addition and the other through subtraction.• In statistics and experimental sciences, the sign commonly indicates the confidence interval or uncertainty bounding a range of possible errors in a measurement, often the standard deviation or standard error. The sign may also repres… In Unicode: .mw-parser-output .monospaced{font-family:monospace,monospace}U+00B1 ± PLUS-MINUS SIGN (±, ±, ±) See also: U+2213 ∓ MINUS-OR-PLUS SIGN (∓, ∓, ∓)
In Unicode: .mw-parser-output .monospaced{font-family:monospace,monospace}U+00B1 ± PLUS-MINUS SIGN (±, ±, ±)
See also: U+2213 ∓ MINUS-OR-PLUS SIGN (∓, ∓, ∓)
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