Quick Answer: What Are The Symbols In Statistics?

What does μ mean?

Micro-Micro- (Greek letter μ or legacy micro symbol µ) is a unit prefix in the metric system denoting a factor of 10−6 (one millionth).

Confirmed in 1960, the prefix comes from the Greek μικρός (mikrós), meaning “small”.

It is the only SI prefix which uses a character not from the Latin alphabet..

What do Venn diagram symbols mean?

Venn diagrams are comprised of a series of overlapping circles, each circle representing a category. To represent the union of two sets, we use the ∪ symbol — not to be confused with the letter ‘u. ‘ … This diagram represents the union of A and B which we notate as A ∪ B.

How do you write statistical symbols?

On the Insert tab, in the Symbols group, click the arrow under Equation, and then click Insert New Equation. Under Equation Tools, on the Design tab, in the Symbols group, click the More arrow. Click the arrow next to the name of the symbol set, and then select the symbol set that you want to display.

What is the symbol for sum?

sigmaThe symbol Σ (sigma) is generally used to denote a sum of multiple terms. This symbol is generally accompanied by an index that varies to encompass all terms that must be considered in the sum. For example, the sum of first whole numbers can be represented in the following manner: 1 2 3 ⋯.

What do the symbols in statistics mean?

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. The symbol ‘N’ represents the total number of individuals or cases in the population.

What is the symbol for or in probability?

Probability theory indicates the probability of either event A or event B occurring (“or” in this case means one or the other or both). In particular, the pdf of the standard normal distribution is denoted by φ(z), and its cdf by Φ(z).

What is the symbol for the sample mean?

x̄The sample mean symbol is x̄, pronounced “x bar”.

What is the U symbol in math?

∪ The symbol ∪ means union. Given two sets S and T, S ∪ T is used to denote the set {x|x ∈ S or x ∈ T}.

What does P mean in statistics?

What Is P-Value? In statistics, the p-value is the probability of obtaining results as extreme as the observed results of a statistical hypothesis test, assuming that the null hypothesis is correct. … A smaller p-value means that there is stronger evidence in favor of the alternative hypothesis.

What is the sign of Alpha?

Alpha /ˈælfə/ (uppercase Α, lowercase α; Ancient Greek: ἄλφα, álpha, modern pronunciation álfa) is the first letter of the Greek alphabet. In the system of Greek numerals, it has a value of 1. – an ox or leader. Letters that arose from alpha include the Latin A and the Cyrillic letter А.

What do the symbols in probability mean?

Definitions and Notation The conditional probability of Event A, given Event B, is denoted by the symbol P(A|B). The complement of an event is the event not occurring. … 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.

What is the U symbol in stats?

Probability and statistics symbols tableSymbolSymbol NameMeaning / definitionzxstandard scorezx = (x-x) / sxX ~distribution of Xdistribution of random variable XN(μ,σ2)normal distributiongaussian distributionU(a,b)uniform distributionequal probability in range a,b37 more rows