What Are The Symbols For Statistics?

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 is the Phi symbol in statistics?

Capital phi is a symbol that typically refers to the CDF of the standard normal distribution. So PHI(z) would be the “from the left” area under the PDF up to the z-th point on the x axis (I chose “z” on purpose, to correspond to z-score).

What does little C mean in statistics?

The complement of an event is the subset of outcomes in the sample space that are not in the event. A complement is itself an event. The complement of an event A is denoted as A c A^c Ac or A′. … This means that in any given experiment, either the event or its complement will happen, but not both.

What does δ mean in statistics?

∆δ Delta. ∆: Means “change” or “difference”, as in the equation of a line’s slope: 2.

What does ∩ mean in probability?

Definition: intersections. The intersection of events A and B, denoted A∩B, is the collection of all outcomes that are elements of both of the sets A and B.

What does the C stand for in math?

In math, generally you see that as the set of all complex numbers. … That “C” is in the typeface called ‘blackboard bold”, and it represents the set of complex numbers.

What do the symbols in statistics mean?

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 is D with a line over it in statistics?

“d-bar” (my editor is not letting me use the correct symbol, but this is the letter “d” with a bar over it) is just the average of the differences (d) in the two samples.

What does 3 mean statistics?

In mathematics, the expression 3! is read as “three factorial” and is really a shorthand way to denote the multiplication of several consecutive whole numbers. Since there are many places throughout mathematics and statistics where we need to multiply numbers together, the factorial is quite useful.

What does this symbol mean φ?

The lowercase letter φ (or often its variant, ϕ) is often used to represent the following: Magnetic flux in physics. The letter phi is commonly used in physics to represent wave functions in quantum mechanics, such as in the Schrödinger equation and bra–ket notation: . The golden ratio.

What does P XY mean?

Joint Probability Mass Function5.1. 1 Joint Probability Mass Function (PMF) The joint probability mass function of two discrete random variables X and Y is defined as PXY(x,y)=P(X=x,Y=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 is the symbol of mode?

Probability and statistics symbols tableSymbolSymbol NameMeaning / definition∑∑double summationdouble summationMomodevalue that occurs most frequently in populationMRmid-rangeMR = (xmax + xmin) / 2Mdsample medianhalf the population is below this value37 more rows

What does C mean in statistics?

P(AB) means the probability that events A and B occur. You could write it P(A∩B). The superscript c means “complement” and Ac means all outcomes not in A. … The complement of an event is the subset of outcomes in the sample space that are not in the event. A complement is itself an event.

What does the symbol λ mean?

The Lambda logo (λ) is a symbol found frequently in the Half-Life universe. It represents the Greek letter “Λ” (lowercase “λ”), and is a radioactive decay constant used in the half-life equation. “Λ” is the 11th letter in the Greek alphabet.