Data Types

Question 1

Nominal data

Answer 1

First level of measurement
Categories with different response options with no order to them
Categorical data

Question 2

Ordinal data

Answer 2

Second level of measurement
Data has order, but cannot be certain that data is equally spaced
Can be treated as categorical or numeric data

Question 3

Interval data

Answer 3

Third level of measurement
Data points are equidistant from each other, but lack a true zero (example: temperature, IQ)
Numeric data

Question 4

Ratio data

Answer 4

Fourth level of measurement
Numbers with order, equidistance, and true zero
Numeric data