Answer to Question #156545 in Statistics and Probability for Mathy

Question

1.John measured time on days, with '0' correspond to his birth date. The day before his birth is '-1', the day after his birth date is '+1', and so on. John has converted these dates of major historical events to his numbering system. What is the level of measurement (ratio, interval, ordinal,nominal)of these numbers?and why this measurement applies.

Answer 1

This is a ratio level of measurement.

There is order and the difference between two values is meaningful.

Also there is a clear definition of 0.