Question

Consider all of the countries in the world as the observational units in a study.

1. Identify three quantitative variables that could be recorded on these countries.
2. Identify three categorical variables that could be recorded on these countries.

Please explain the difference between quantitative and categorical variables.

Answer 1

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3 quantitative variables recorded on these countries: population of the country, Number of people who are millionare, HNI index

3 categorical variables recorded on these countries: Does the country have a nuclear program, Is the country part of the UN Council , Does the country participate in UN peace corps?

Here' the difference between the two:

Quantitative variables measure some characteristic of interest. Categorical variables just describe, but don’t measure, a characteristic of interest.