Symbols:Bar/Mean

Sample Mean

$\overline x$

Let $S = \set {x_1, x_2, \ldots, x_n}$ be a random sample from a population.

The sample mean of $S$ is defined and denoted as:

$\overline x = \ds \sum \dfrac {x_i} n$

The $\LaTeX$ code for \(\overline x\) is \overline x .

Sources

• 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): bar
• 2021: Richard Earl and James Nicholson: The Concise Oxford Dictionary of Mathematics (6th ed.) ... (previous) ... (next): bar