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Khan Academy(#1): Identifying individuals, variables and

categorical variables in a data set

1. When doing statistics, what is an individual:

2. When doing statistics, what is a variable?

3. When doing statistics, what is a categorical variable?

4. When doing statistics, what is a numerical variable?

5. When doing statistics, what is a data set?

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1 Answer

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Answer:

Explanation shown below

Explanation:

In the study of statistics – INDIVIDUALS are objects that are described by a set of data.

VARIABLE is said to be an important element of any statistical data. It is a characteristic of a unit that is being observed which may rightly assume many set of values. Numerical values can be assigned to them.

CATEGORICAL VARIABLE – are usually referred to as qualitative data, which can be put into different categories based on their characteristics. Under this, we have the Nominal Variable – eg. Gender - Male, Female. They the set of variables that have two or more categories with no ordering. The Ordinal Variable – has two or more categories with clear ordering.

NUMERICAL VARIABLE include interval variable and ratio variable. In these types of variables, measurement have numerical meaning.

DATA SET is a collection of data, permanently stored which relate to a particular subject. The test scores of each student in a particular class is an example of data set

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