From 375cf15b75e1e698fad6eb0194845f1d7387a879 Mon Sep 17 00:00:00 2001 From: zleyyij Date: Tue, 12 Dec 2023 14:23:14 -0700 Subject: [PATCH] vault backup: 2023-12-12 14:23:14 --- education/statistics/Measurement Error.md | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/education/statistics/Measurement Error.md b/education/statistics/Measurement Error.md index 840e6fb..f5795fe 100644 --- a/education/statistics/Measurement Error.md +++ b/education/statistics/Measurement Error.md @@ -6,3 +6,14 @@ Bias *affects all measurements the same way, making them all too large or too sm ## Chance error Chance errors *change from measurement to measurement but average out over time*. There is no way to remove all chance errors from a measuring process. An example of chance error would be starting a stopwatch then attempting to stop it at exactly 5 seconds, then repeating. The times will vary, but each measurement will vary in a different way. +- Chance error is how much an individual measurement varies from the exact value. It can be positive or negative. +- The standard deviation of repeated measurements gives us the expected size of a chance error +``` +individual measurement = exact value + chance error +``` + +# Terminology +| Term | Definition | +| -- | -- | +| Best Guess | Average/Mean | +| Off by how much | standard deviation |