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# Identify variables: numerical categorical ordinal interval

Data on a sample of 1080 salespeople from a large electronics retail company is shown in the attached file. The dataset contains the following variables:

Sales: Total sales (in \$) by each salesperson last year
Department: What department (home electronics, computers, etc) the salesperson works in.
Year born: The year in which the salesperson was born
Training Hours: Number of hours of training the individual has received during career.
Gender: Salesperson's Gender
Experience: Number of years the individual has worked with your company.
Education: Level of education completed by salesperson
Marital Status: Salesperson's Marital Status

Use the data provided to answer the following questions.
(a) Which of the variables are categorical and which are numerical?
(b) Which of the categorical variables are nominal and which are ordinal?
(c) Which of the numerical variables are ratio and which are interval?

#### Solution Preview

(a) Which of the variables are categorical and which are numerical?
(b) Which of the categorical variables are nominal and which are ordinal?
(c) Which of the numerical variables are ratio and which are interval?

1a.

Categorical variables are those where a number is assigned to distinguish between groups but that number is not a measure of something quantitative. For example, assigning each kindergarten class with a different number so you can tell them apart. Mr Walker's class = 1, Mrs Smith's class = 2 and so forth. Those are "categories" for the classes. Numerical variables are those that capture the quantity of something, such as the ...

#### Solution Summary

Your tutorial is 380 words and defines each term as well as giving you the variables that match each and WHY they were selected. A reference is given for more reading.

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