Question

match each variable with its level of measurement. gender a. ordinal temperature in celsius b. nominal wage per hour c. interval letter grade (a, b, c, d, or f) d. ratio habits on an always/sometimes/never scale age in years

Explanation:

1. Gender is a categorical variable with no order, so it's nominal.
2. Celsius temperature has intervals but no true zero (0°C is not the absence of temperature), so it's interval.
3. Wage per hour has a true zero (0 wage means no money earned), so it's ratio.
4. Letter grades have an order (A > B > C > D > F), so it's ordinal.
5. The "Always/Sometimes/Never" scale has an order, so it's ordinal.
6. Age in years has a true zero (0 years means the start of life), so it's ratio.

Answer:

Gender - b. Nominal
Temperature in Celsius - c. Interval
Wage per hour - d. Ratio
Letter Grade (A, B, C, D, or F) - a. Ordinal
Habits on an Always/Sometimes/Never scale - a. Ordinal
Age in years - d. Ratio