A variable is an empirical property that can take on two or more values. If a property can change in value or kind, then it is regarded as a variable. For e.g. weight (value), gender (kind)
Attribute: An attribute is a specific value on a variable.
Importance of variable:
- Variables help to present and analyze the data in a convenient way
- Identification of variables helps in the presentation of data
- Variables help to achieve objectives of the research
- Variables help to test the hypothesis
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