So what is interval data?
When used in econometrics, interval data is that which is a fixed distance apart on a given scale. For example, the measurement of temperature on a given scale would be an example of this. This is often seen in economics and econometrics when we are comparing different time frames.
For example, all years are measured in the same interval and as a result data can be placed consistently in a fixed time period. For example, the Gross Domestic Product of the Netherlands over the period 2015 to 2020 is a five year period or interval across which we can make an econometric assessment.
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