Difference between revisions of "Manuals/calci/COVAR"

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=COVAR(a1,a2)=
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<div style="font-size:30px">'''COVAR (Array1,Array2)'''</div><br/>
 
 
 
where,
 
where,
*<math>a1</math> first array of integers or reference to the cells containing array
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*<math>Array1</math> is the first array of integers or reference to the cells containing array
*<math>a2</math> second array of integers or reference to the cells containing array
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*<math>Array2</math> is the second array of integers or reference to the cells containing array
 
+
**COVAR(), returns covariance, the average of the products of paired deviations.
COVAR calculates the covariance, the average of the products of deviations for each data point pair in two arrays.
 
  
 
== Description ==
 
== Description ==
  
COVAR(a1,a2)
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COVAR (Array1,Array2)
  
 
*COVAR  is used to determine the relationship between two data sets.
 
*COVAR  is used to determine the relationship between two data sets.
*Arguments <math>a1</math>, <math>a2</math> can be numbers or can be names, arrays or references containing numbers.
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*Arguments <math>Array1</math>, <math>Array2</math> can be numbers or can be names, arrays or references containing numbers.
 
*Values containing text, logical values or empty cells are ignored.
 
*Values containing text, logical values or empty cells are ignored.
*If either <math>a1</math> or <math>a2</math> is empty, Calci displays a NaN error message.
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*If either <math>Array1</math> or <math>Array2</math> is empty, Calci displays a NaN error message.
*The number of data points in <math>a1</math> and <math>a2</math> should be same, else Calci displays a #N/A error message.
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*The number of data points in <math>Array1</math> and <math>Array2</math> should be same, else Calci displays a #N/A error message.
 +
 
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==ZOS==
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*The syntax is to use the COVAR function in ZOS is <math>COVAR (Array1,Array2)</math>
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**<math>Array1</math> and <math>Array2</math> are the set of values to find the Covariance.
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*For e.g.,COVAR([10,20,15,17,19],[12,22,31,16,45])
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*COVAR([50..57],[17..24])
  
 
== Examples ==
 
== Examples ==
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  =COVAR(A2:A6,B2:B6) : Returns ''4'' as the output.
 
  =COVAR(A2:A6,B2:B6) : Returns ''4'' as the output.
  =COVAR(A2:A5,{12,13,14,15}) : Returns '2.5'' as the output.
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  =COVAR(A2:A5,[12,13,14,15]) : Returns ''2.5'' as the output.
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 +
==Related Videos==
 +
 
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{{#ev:youtube|ualmyZiPs9w|280|center|Covariance}}
  
 
== See Also ==
 
== See Also ==
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*[http://en.wikipedia.org/wiki/Covariance Covariance]
 
*[http://en.wikipedia.org/wiki/Covariance Covariance]
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 +
 +
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*[[Z_API_Functions | List of Main Z Functions]]
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*[[ Z3 |  Z3 home ]]

Latest revision as of 15:52, 7 August 2018

COVAR (Array1,Array2)


where,

  • is the first array of integers or reference to the cells containing array
  • is the second array of integers or reference to the cells containing array
    • COVAR(), returns covariance, the average of the products of paired deviations.

Description

COVAR (Array1,Array2)

  • COVAR is used to determine the relationship between two data sets.
  • Arguments , can be numbers or can be names, arrays or references containing numbers.
  • Values containing text, logical values or empty cells are ignored.
  • If either or is empty, Calci displays a NaN error message.
  • The number of data points in and should be same, else Calci displays a #N/A error message.

ZOS

  • The syntax is to use the COVAR function in ZOS is
    • and are the set of values to find the Covariance.
  • For e.g.,COVAR([10,20,15,17,19],[12,22,31,16,45])
  • COVAR([50..57],[17..24])

Examples

Array 1 Array 2
2 21
4 22
6 23
8 24
10 25
=COVAR(A2:A6,B2:B6) : Returns 4 as the output.
=COVAR(A2:A5,[12,13,14,15]) : Returns 2.5 as the output.

Related Videos

Covariance

See Also

References