Given: The set of scores for a variable is displayed in a frequency distribution polygon.
To find: We need to find which scale of measurement was used to measure the variable
Solution: A frequency distribution table is always either in interval or in ration scale.
So the mean formula is 
. Using that formula, we can solve it as such:
<u>In short, your mean is 1.3, or A.</u>
Answer:
Hanna said is correct because the money is divided in the ratio 2:3
A.) C = kpm
b.) 65,550 = k * 115 * 3800 = 437,000k
k = 65,550/437,000 = 0.15
c.) C = 0.15 * 84 * 3500 = $44,100
