| Symbol | Format | Data |
|---|---|---|
| ± | Code Point |
U+00B1 |
| TeX |
\pm |
|
| SVG |
In math, the plus-minus symbol (±) has several uses, depending on the context:
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Indicating both positive and negative solutions: When the plus-minus symbol is used in equations or expressions, it represents both the positive and negative solutions for a given value. For example:
In this case, the plus-minus symbol indicates that there are two possible values for , one positive and one negative: or .
-
Representing the range of error or uncertainty: In measurements, scientific notation, or statistical data, the plus-minus symbol is used to indicate the range of error or uncertainty associated with a value. This is often seen in the context of confidence intervals or error margins. For example:
This expression means that the true value of lies in the range from to .
The plus symbol is used in math to represent the addition of two expressions.
The minus symbol is an arithmetic operator used to represent subtraction.