Definition: Sample mean
Index: The Book of Statistical Proofs ▷ General Theorems ▷ Probability theory ▷ Expected value ▷ Sample mean
Sources:
Metadata: ID: D142 | shortcut: mean-samp | author: JoramSoch | date: 2021-04-16, 11:53.
Definition: Let $x = \left\lbrace x_1, \ldots, x_n \right\rbrace$ be a sample from a random variable $X$. Then, the sample mean of $x$ is denoted as $\bar{x}$ and is given by
\[\label{eq:mean-samp} \bar{x} = \frac{1}{n} \sum_{i=1}^{n} x_i \; .\]- Wikipedia (2021): "Sample mean and covariance"; in: Wikipedia, the free encyclopedia, retrieved on 2020-04-16; URL: https://en.wikipedia.org/wiki/Sample_mean_and_covariance#Definition_of_the_sample_mean.
Metadata: ID: D142 | shortcut: mean-samp | author: JoramSoch | date: 2021-04-16, 11:53.