What is the formula for the standard error?

Gwendolyn Willett

Gwendolyn Willett

Answered question

2022-01-16

What is the formula for the standard error?

Answer & Explanation

Andrew Reyes

Andrew Reyes

Beginner2022-01-16Added 24 answers

se=var(X)
Explanation:
Given a random variable X with a certain pdf f, the variance is
var(X)=E(X2)E2(X), where E is the expected value. The standard error (or standard deviation) is just se=var(X). For example, if X is N(μ,σ2), the standard error is σ.
vrangett

vrangett

Beginner2022-01-17Added 36 answers

When you are asked to find the sample error, you're probably finding the standard error. That uses the following formula: sn. You might be asked to find standard errors for other stats like the mean or proportion.

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