# Question: What Do The Probability Symbols Mean?

## What is an upside down V?

The upside down ‘v’ used in the problem is called caret, and represents exponent, literally ‘raised to power’..

## What are the symbols of probability?

List of Probability and Statistics SymbolsSymbolSymbol NameExampleP(A ∩ B)probability of events intersectionP(A∩B) = 0.5P(A)probability functionP(A) = 0.5P(A | B)conditional probability functionP(A | B) = 0.3P(A ∪ B)probability of events unionP(A∪B) = 0.535 more rows

## What does the U and upside down U mean in statistics?

Best Answer #3. +5. This is set notation. ∪ means union, ∩ means intersection. For example: A ∪ B means everything in A and B; A ∩ B means the things that are common to A and B.

## What does this symbol mean μ in statistics?

The term population mean, which is the average score of the population on a given variable, is represented by: μ = ( Σ Xi ) / N. The symbol ‘μ’ represents the population mean. The symbol ‘Σ Xi’ represents the sum of all scores present in the population (say, in this case) X1 X2 X3 and so on.

## What does ∩ mean in probability?

The probability that Events A and B both occur is the probability of the intersection of A and B. The probability of the intersection of Events A and B is denoted by P(A ∩ B). If Events A and B are mutually exclusive, P(A ∩ B) = 0. The probability that Events A or B occur is the probability of the union of A and B.

## What is the U symbol in math?

In set theory, the union (denoted by ∪) of a collection of sets is the set of all elements in the collection. It is one of the fundamental operations through which sets can be combined and related to each other.

## What does P Y X mean?

The notation P(x|y) means P(x) given event y has occurred, this notation is used in conditional probability. There are two cases if x and y are dependent or if x and y are independent. Case 1) P(x|y) = P(x&y)/P(y)

## What does the U symbol in probability mean?

2. P(A∪B) is the probability that the event is in A or B. For example, if your space of events is {1,2,3,4,5,6} (like throwing a dice), define A={1,2} and B={6}. In that case, P(A∪B) is the probability that the dice gives you 1,2 or 6. Therefore P(A∪B)=36=12=0.5=50%.

## What does ∩ mean in math?

Intersection of SetsDefinition of Intersection of Sets: Intersection of two given sets is the largest set which contains all the elements that are common to both the sets. The symbol for denoting intersection of sets is ‘∩’. …