From ca30036ee0e3e34d6871fd5a5454d46bd49ea287 Mon Sep 17 00:00:00 2001 From: zleyyij Date: Wed, 24 Jan 2024 14:19:53 -0700 Subject: [PATCH] vault backup: 2024-01-24 14:19:53 --- education/statistics/Sampling.md | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/education/statistics/Sampling.md b/education/statistics/Sampling.md index 371b3d2..561ca57 100644 --- a/education/statistics/Sampling.md +++ b/education/statistics/Sampling.md @@ -36,4 +36,6 @@ An ideal sample will represent the whole population. | Measurement | Interviewing method influences the response, uses loaded words or ambiguities. | (Ch 20, stat 1040) -The expected value for a sample percentage equals the population percentage. The standard error for that percentage = `(SE_sum/sample_size) * 100%` \ No newline at end of file +The expected value for a sample percentage equals the population percentage. The standard error for that percentage = `(SE_sum/sample_size) * 100%` + +To determine by how much the standard error is affected, if `n` is the sample size, the standard error changes by $\frac{1}{\sqrt{n}}$ \ No newline at end of file