**Contents**show

## What is the i symbol in math?

The letter i is used to signify that a number is an imaginary number. It **stand for the square root of negative one**. In electrical engineering it is often replaced by the letter j to avoid conflict with the symbol for current.

## What is the symbol that looks like a capital I?

Capital Ɪ: **U+A7AE** Ɪ LATIN CAPITAL LETTER SMALL CAPITAL I since Unicode 9.0. 0 (2016)

## What does the cap symbol mean in math?

The cap symbol is used in math to represent **the set intersection operator**. It also is used in probability to represent the occurence of two events. Typically, it is used in an expression like this: A∩B. In plain language, this means the intersection of the sets A and B.

## What is the name of this symbol?

This table contains special characters.

Symbol | Name of the Symbol | Similar glyphs or related concepts |
---|---|---|

& | Ampersand | |

⟨ ⟩ | Angle brackets | Bracket, Parenthesis, Greater-than sign, Less-than sign |

‘ ‘ | Apostrophe | Quotation mark, Guillemet, Prime, foot (unit), minute |

* | Asterisk |

## What are () called in English?

They can also be used in mathematical expressions. For example, 2{1+[23-3]}=x. **Parentheses** ( () ) are curved notations used to contain further thoughts or qualifying remarks. However, parentheses can be replaced by commas without changing the meaning in most cases.

## What is the symbol that looks like an M?

In typography, **an em dash** is a punctuation symbol whose width is equal to that of a capital letter M.

## How do u find the mean?

The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is **the sum divided by the count**.

## How do you find the sample mean?

**How to calculate the sample mean**

- Add up the sample items.
- Divide sum by the number of samples.
- The result is the mean.
- Use the mean to find the variance.
- Use the variance to find the standard deviation.

## What is the symbol for if and only if?

Basic logic symbols

Symbol | Name | Read as |
---|---|---|

⇔ ≡ ⟷ |
material equivalence |
if and only if; iff; means the same as |

¬ ˜ ! | negation | not |

Domain of discourse | Domain of predicate | |

∧ · & | logical conjunction | and |