notes

commit 5cdfa427e34e5d0a4a53487b746c82c99ac1a56b
parent dcda02c5164c315aecffd8d536395ec66adeef27
Author: Andrew <andrewlaack1@gmail.com>
Date:   Tue, 30 Jul 2024 14:50:05 -0500

prob notes

Diffstat:
M
CorrelationCoefficient.md
 | 
2
+-
M
Covariance.md
 | 
6
+++++-
M
StatisticsAndProbability.md
 | 
1
+

3 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/CorrelationCoefficient.md b/CorrelationCoefficient.md
@@ -1,4 +1,4 @@
-:ml: :ds: :stats:
+:ml: :ds: :stats: :prob:
 # Correlation Coefficient
 
 ML CH2
diff --git a/Covariance.md b/Covariance.md
@@ -5,6 +5,10 @@ Stats D2
 
 ## Notes
 
-**Definition:** Covariance is the strength of a linear relationship between two different variables. When this number is larger it indicates that higher numbers for one of the variables is associated with higher numbers for the other. The inverse is also true. 
+**Definition:** Covariance is the strength of a linear relationship between two different variables. When this number is larger it indicates that higher numbers for one of the variables is associated with higher numbers for the other. The inverse is also true (negative results in negative cov)
 
 There are also no bounds for the range of covariance unlike correlation.
+
+Cov(X,X) = Var(X) // keep in mind this is the squared unit like variance.
+
+See [[CorrelationCoefficient.md]] for normalized version of this value.
diff --git a/StatisticsAndProbability.md b/StatisticsAndProbability.md
@@ -84,3 +84,4 @@ L10:
 	- [[DerivedDistribution.md]]
 L11:	
 	- [[Covariance.md]]
+	- [[CorrelationCoefficient.md]]