From 4d53fa14ee0cd615444aca6f6ba176e0ccc1b5be Mon Sep 17 00:00:00 2001
From: TheSiahxyz <164138827+TheSiahxyz@users.noreply.github.com>
Date: Mon, 29 Apr 2024 22:06:12 -0400
Subject: init

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 .../Fundamentals of Data Mining/Content/Z-score.md   | 20 ++++++++++++++++++++
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 create mode 100644 SI/Resource/Fundamentals of Data Mining/Content/Z-score.md

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diff --git a/SI/Resource/Fundamentals of Data Mining/Content/Z-score.md b/SI/Resource/Fundamentals of Data Mining/Content/Z-score.md
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+---
+id: Z-score
+aliases:
+  - Z-score - An example
+tags: []
+---
+
+### Z-score - An example
+
+- John gets a mark of 64 in a physics test, where the mean is 50 and the
+  standard deviation is 8.
+- Jane gets a mark of 74 in a chemistry test, where the mean is 58 and the
+  standard deviation is 10
+
+Who has a better class performance?
+
+- John's z = (64 - 50) / 8 = 1.75
+- Jane's z = (74 - 58) / 10 = 1.6
+- Although Jane's score is higher, John's score is further above the mean, and
+  it might be concluded that John has achieved greater success.
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