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# Classifying data into ratio, interval, ordinal, or nominal

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Please classify the information, in the attachment, according to order of
ratio, interval, ordinal, and nominal significance.

#### Solution Preview

Identifying the types of measurement (Nominal, Ordinal, Interval, Ratio) is very tricky. So, I have mentioned here the detailed identification of these measurements. Identifying the variables as to the types of measurement in the attached document (OrderPower.doc) were made.

A. Nominal
The name 'Nominal' comes from the Latin nomen, meaning 'name' and nominal data are items which are differentiated by a simple naming system.
The only thing a nominal scale does is to say that items being measured have something in common, although this may not be described.
Nominal items may have numbers assigned to them. This may appear ordinal but is not -- these are used to simplify capture and referencing.
Nominal items are usually categorical, in that they belong to a definable category, such as 'employees'.

Variables in the document that are Nominal type
1. Gender (page 3)
2. ...

#### Solution Summary

This solution addresses the problem of the student on how to classify the types of data variables used in the study. In statistics, data types are classified into ratio, interval, ordinal, and nominal. The rationale behind classifying the data is that for every type of data there is a corresponding statistical tool that is applicable.

\$2.19

## Dependent variable

Identify the level of dependent variable measurement (nominal, ordinal, interval, or ratio) implied by the statement.

1. You asked congressmen if the money they have received from PACs is more than \$100,000, between \$50,000 and \$100,000, or less than \$50,000.

2. You asked congress about the primary source of their PAC money: Labor unions, corporations, medical associations, or civil rights groups.

3. You checked the congressional record to see how many times in the past year each congressman was absent from a roll call vote.

4. You asked people on the street to rate their own congressman on a 1 - 7 Likert scale.

5. You asked congressmen to indicate whether they are Republican, Democrat, or Independent.

6. You asked people on the street to rate their own congressman as very liberal, slightly liberal, moderate, slightly conservative or very conservative.

7. You asked each congressman how many years s/he had been in congress.

8. You asked congressmen: Of the following issues, rank order the top three in importance: gas prices, war in Iraq, war in Afghanistan, urban crime, domestic poverty, subprime mortgage crisis.

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