Attributes Classes, Frequency of Attributes and Contingency Table

Learning Objective:

• What are Attribute Classes?

• What are Attribute Frequencies?

• What are Contingency Table?

Concepts

• Attributes can be Positive or Negative.

• Positive Attributes can be represented by "A", "B", "C"....

• Negative Attributes can be represented by "α", "β", "γ"....

• Attributes themselves represent a Group. Such groups can be termed as "Classes"

• Positive Attributes can have Positive Frequencies and Negative Attributes can have Negative Frequencies.

• Invalid classes can be "A" and "α"; "B" and "β"; "C" and "γ"

• Relationship of Frequency can be studied in the Contingency Table.

• Contingency Table can be for 2 OR 3 Attributes.

• Contingency Table for 2 Attributes is also termed as 9 Square Table or 2 x 2 Table.

Video: Attribute Classes and Frequency and Contingency Table for 2 Attributes.