An hour is a unit of measurement. A ratio is a comparison of similar things. You can use hours within a ratio showing something over a measurement of time. For example as speed (25 miles/kilometers per hour) or hourly wages ($7.25 per hour).
An hour can also be a measurement of Right Ascension. This is a measure timing the passage of objects in the sky across the meridian as the Earth rotates. RA is measured in hours, minutes, and seconds.
interval
No, it is nominal.
ratio
Ratio
Only on the Kelvin scale.
Year of birth is interval level of measurement; age is ratio.
It is a ratio scale of measurement.
interval
Three basic levels of measurement are nominal, ordinal, and interval/interval-ratio.
Three basic levels of measurement are nominal, ordinal, and interval/interval-ratio.
Ratio. It has a true zero.
Nominal Scale < Ordinal< Interval < Ratio
Questionnaires typically use nominal, ordinal, interval, or ratio levels of measurement. The level of measurement chosen depends on the specific type of data being collected and the research objectives.
It is ratio; it has a natural zero and is numerical data.
It is an interval scale. It is not a ratio scale, the next higher level, because the zero is arbitrary and not unique from one calendar to another.
Interval and ratio
nominal