Answer:

mathematicallly error sentence!
Answer:
c
Step-by-step explanation:
it's really product of power
Answer:
Survey data should not be treated as interval data because the measure distance between categories may not be perceived as the same.
Step-by-step explanation:
Maybe you can be right with the ranking, for example:
White = 1
Grey = 2
Black = 3
But most sure the grey will be closer to black than it is to white, or vice versa.
M=15 add 5 to both sides, you get m=15