**Contents**show

## What do the Greek letters mean in statistics?

Greek letters represent **population parameter values**; roman letters represent sample values. A Greek letter with a “hat” represents and estimate of the population value from the sample; i.e., μx represents the true population mean of X , while ^μx represents its estimate from the sample.

## What are the symbols used in statistics?

Probability and Statistics Symbols Table

Symbol | Symbol Name | Meaning / definition |
---|---|---|

Μ | Population Mean | Average of a group of two or more numbers. |

var(X) | Variance | Variance of random variable X |

σ² | Variance | Variance of population values |

std(X) | Standard Deviation | Standard deviation of random variable X |

## What does the Greek e symbol mean in statistics?

That is a **capital Sigma** (from the Greek alphabet). It stands for “Sum”.

## What is the Greek symbol for standard deviation?

Letter

Letter | Name | Statistical Reference |
---|---|---|

s | sigma – lower case |
Population standard deviation. |

S | sigma – upper case | Tells the reader to sum what follows it in a formula. |

r | rho – lower case | Population correlation coefficient. |

q | theta – lower case | Population proportion (in some texts). |

## What is the Greek letter used in statistical calculations?

Synonyms, crossword answers and other related words for GREEK LETTER USED IN STATISTICAL CALCULATIONS [**sigma**]

## What is the Phi symbol in statistics?

The symbol for the statistic is the lower – case Greek letter phi: **ϕ**. The phi is the effect size statistic of choice for 2 × 2 (read two-by-two) table statistics such as the Fisher’s exact or a 2 × 2 chi-square.

## Is y a gamma?

**gamma** radiation (Y)

## What does the U with a line mean in stats?

Probability and Statistics Symbols

When I say quasi-alphabetical, I mean that I have ordered them according to what they look like. For example, the Greek letter Beta (β) looks like the letter b, so you’ll find it in the b section. Same for the **letter mu(μ)**, which looks like the letter u.