When using an interval scale, which types of mathematical operations are appropriate?
A) all mathematical operations
B) addition and subtraction
C) division and multiplication
D) addition and multiplication
Question 2
In order to determine that a person who walks 50 units of distance is walking twice as far as someone who walks 25 units of distance, what type of measurement scale must be employed?
A) nominal
B) interval
C) ordinal
D) ratio