added definition "samp-size"

Author: JoramSoch

D/samp-size.md

@@ -0,0 +1,30 @@
+---
+layout: definition
+mathjax: true
+
+author: "Joram Soch"
+affiliation: "BCCN Berlin"
+e_mail: "joram.soch@bccn-berlin.de"
+date: 2024-11-22 11:33:27
+
+title: "Sample size"
+chapter: "General Theorems"
+section: "Probability theory"
+topic: "Random experiments"
+definition: "Sample size"
+
+sources:
+  - authors: "Wikipedia"
+    year: 2024
+    title: "Sampling (statistics)"
+    in: "Wikipedia, the free encyclopedia"
+    pages: "retrieved on 2024-11-22"
+    url: "https://en.wikipedia.org/wiki/Sampling_(statistics)"
+
+def_id: "D211"
+shortcut: "samp-size"
+username: "JoramSoch"
+---
+
+
+**Definition:** Let $x = \left\lbrace x_1, \ldots, x_n \right\rbrace$ be a [statistical sample](/D/samp) from a [random variable](/D/rvar) or a set of [random variables](/D/rvar) $X$. Then, the number of elements $n$ in this sample is called the "sample size".