From 8c9fe961d810915cd2220b4e057628570c2880dc Mon Sep 17 00:00:00 2001 From: zleyyij Date: Mon, 29 Jan 2024 14:17:28 -0700 Subject: [PATCH] vault backup: 2024-01-29 14:17:28 --- education/statistics/Sampling.md | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/education/statistics/Sampling.md b/education/statistics/Sampling.md index 2078c21..823b6cc 100644 --- a/education/statistics/Sampling.md +++ b/education/statistics/Sampling.md @@ -72,7 +72,9 @@ Remember that the *parameter* is the *number* that actually describes the popula For any unknown average, the probability histogram of the sample averages will be shaped like the normal curve and centered at the true average with a standard deviation equal to $SE_{ave}$. -$$ sample_{ave} \pm 2 * se_{ave} $$ +$$ sample_{ave} \pm 2 * SE_{ave} $$ +This equation should be a review: +$$ SE_{ave} = \frac{SD}{\sqrt{size\space samp}} $$ The above equation will give you an interval that you can be 95% confident that the true random will be within that point. -95% does *not* mean that 95% of the data is in the interval, it just means we are 95% confident that the actual point is going to lie within the range specified. \ No newline at end of file +95% does *not* mean that 95% of the data is in the interval, it just means we are 95% confident that the actual point is going to lie within the range specified. \ No newline at end of file