What Are Crow's Feet

question 7

Multiple Choice

What are crow's feet?

• A)shorthand for multiple lines showing relations between two entities in an E-R diagram
• B)a sequence describing the divergent data packets leading to different databases
• C)the last entry in the data model which generates mini-reports
• D)the entry and exit points in a data model

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Definitions:

Correlation Coefficient

A statistical measure that quantifies the degree to which two variables vary together.

Sample Coefficient

A numerical measure that describes some characteristic or aspect of a sample of data.

Sample Covariance

A measure of the degree to which two variables change together for a sample of a population, indicating their linear relationship.

Cov (x,y)

Represents the covariance between two variables \(x\) and \(y\), measuring how changes in one variable are associated with changes in another.