What among the following applies to the 'Ratio-scale'?
A. It is a useful device in assessing quality and values
B. It has equal interval properties
C. It has a true zero
D. The numerals have the qualities of real numbers and can be added, subtracted etc.
E. It uses non-parametric statistical techniques
Choose the correct answer from the options given below:
1
A, C and D only
2
D and E only
3
A, B and C only
4
B, C and D only