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*If either <math>a1</math> or <math>a2</math> is empty, Calci displays a NaN error message.
*If either <math>a1</math> or <math>a2</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.
*The number of data points in <math>a1</math> and <math>a2</math> should be same, else Calci displays a #N/A error message.
==ZOS==
*The syntax is to use the COVAR function in ZOS is <math>COVAR (Array1,Array2)</math>
**<math>Array1</math> and <math>Array2</math> 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 ==
== Examples ==