Categorical Variables and Numerical Variables. What are they?

Data Collection
When collecting data, each sampled form filled up by people is an observation, and each item in the form is an attribute. For example, in a feedback form:

Feedback Form

Each people filled up the form is an observation, the item in the form is the attributes. Age, Gender, Married, Date is the attributes. Data from the forms are compiled into a data table with observations and attributes.

Read More: Read More: http://edatascience.great-site.net/2023/03/16/attributes-variables-features-columns-observations-rows-dependent-variables-independent-variables-what-are-they/

So, Definitions of data, attributes and observations are:

Data: Data is a collection of observations and attributes

Attributes: Attributes, feature, variable, column, or field is the characteristics of an observation.