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Statistics Symbols - E



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Symbol: E

Meaning:
It represents maximum error tolerance.
Formula used:
For large samples: ,where Zc is the critical value of the standard normal distribution.

Symbol: E(f(x))

Meaning:
It is the expected value of f(x)
Formula used:
E (f(x)) =∑ f(x) P(X)

Symbol: E(X|Y)

Meaning:
It is the conditional expectation.
Formula used:
E (X|Y) = Expected value of the random variable X given Y.

Symbol: exp(λ)

Meaning:
exp denotes exponential distribution, and λ denote its parameter. It is a continuous probability distribution
Formula used:
follows Exponential distribution, i.e., X~ exp (λ)
The pdf of X is given by,
f(x) = λ exp (- λx), x≥0
Used in:
Exponential Distribution.

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