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	<id>https://wikimd.org/index.php?action=history&amp;feed=atom&amp;title=Correlation_coefficient</id>
	<title>Correlation coefficient - Revision history</title>
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	<updated>2026-05-13T11:36:04Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://wikimd.org/index.php?title=Correlation_coefficient&amp;diff=6527818&amp;oldid=prev</id>
		<title>Prab at 17:19, 18 March 2025</title>
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		<updated>2025-03-18T17:19:33Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
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&lt;/table&gt;</summary>
		<author><name>Prab</name></author>
	</entry>
	<entry>
		<id>https://wikimd.org/index.php?title=Correlation_coefficient&amp;diff=6502148&amp;oldid=prev</id>
		<title>Prab: CSV import</title>
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		<updated>2025-03-17T08:05:15Z</updated>

		<summary type="html">&lt;p&gt;CSV import&lt;/p&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 08:05, 17 March 2025&lt;/td&gt;
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&lt;/table&gt;</summary>
		<author><name>Prab</name></author>
	</entry>
	<entry>
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		<title>Prab: CSV import</title>
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		<updated>2025-02-10T11:07:56Z</updated>

		<summary type="html">&lt;p&gt;CSV import&lt;/p&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 11:07, 10 February 2025&lt;/td&gt;
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&lt;/table&gt;</summary>
		<author><name>Prab</name></author>
	</entry>
	<entry>
		<id>https://wikimd.org/index.php?title=Correlation_coefficient&amp;diff=5207941&amp;oldid=prev</id>
		<title>Prab: CSV import</title>
		<link rel="alternate" type="text/html" href="https://wikimd.org/index.php?title=Correlation_coefficient&amp;diff=5207941&amp;oldid=prev"/>
		<updated>2024-02-22T05:01:26Z</updated>

		<summary type="html">&lt;p&gt;CSV import&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;&amp;#039;&amp;#039;&amp;#039;Correlation coefficient&amp;#039;&amp;#039;&amp;#039; is a statistical measure that calculates the strength of the relationship between the relative movements of two variables. The values range between -1.0 and 1.0. A calculated number greater than 1.0 or less than -1.0 means that there was an error in the correlation measurement.&lt;br /&gt;
&lt;br /&gt;
== Overview ==&lt;br /&gt;
A correlation of -1.0 shows a perfect negative correlation, while a correlation of 1.0 shows a perfect positive correlation. A correlation of 0.0 shows no linear relationship between the movement of the two variables.&lt;br /&gt;
&lt;br /&gt;
== Types of Correlation Coefficients ==&lt;br /&gt;
There are several types of correlation coefficients, but the most popular is the [[Pearson Correlation Coefficient]]. This measures the strength and direction of the linear relationship between two variables.&lt;br /&gt;
&lt;br /&gt;
=== Pearson Correlation Coefficient ===&lt;br /&gt;
The Pearson correlation coefficient, also called Pearson&amp;#039;s r, is a measure of the strength and direction of association between two continuous variables. It is defined as the covariance of the two variables divided by the product of their standard deviations.&lt;br /&gt;
&lt;br /&gt;
=== Spearman&amp;#039;s Rank Correlation Coefficient ===&lt;br /&gt;
[[Spearman&amp;#039;s Rank Correlation Coefficient]] is a non-parametric test that is used to measure the degree of association between two variables. It is the statistical dependence between the rankings of two variables.&lt;br /&gt;
&lt;br /&gt;
=== Kendall Rank Correlation Coefficient ===&lt;br /&gt;
The [[Kendall Rank Correlation Coefficient]] is a measure of ordinal association. It is a statistic used to measure the ordinal association between two measured quantities.&lt;br /&gt;
&lt;br /&gt;
== Applications ==&lt;br /&gt;
Correlation coefficients are used in statistics to measure how strong a relationship is between two variables. There are several types of correlation coefficient: Pearson’s correlation (also called Pearson’s R) is a correlation coefficient commonly used in linear regression.&lt;br /&gt;
&lt;br /&gt;
== See Also ==&lt;br /&gt;
* [[Covariance]]&lt;br /&gt;
* [[Linear regression]]&lt;br /&gt;
* [[Spearman&amp;#039;s Rank Correlation Coefficient]]&lt;br /&gt;
* [[Kendall Rank Correlation Coefficient]]&lt;br /&gt;
&lt;br /&gt;
== References ==&lt;br /&gt;
&amp;lt;references /&amp;gt;&lt;br /&gt;
&lt;br /&gt;
[[Category:Statistics]]&lt;br /&gt;
[[Category:Mathematical Concepts]]&lt;br /&gt;
{{stub}}&lt;/div&gt;</summary>
		<author><name>Prab</name></author>
	</entry>
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