Answer:
11.3
Explanation:
To find mean: All values added together divided by amount of values:
X: 11+12+13+14 = 50
50 / 4 (amount of values) = 12.5 (mean of x)
F: 8+3+17+12 = 40
40/4 (amount of values) = 10 (mean of f)
To find mean of x and f combined:
10 + 12.5 = 22.5
22.5 / 2 (amount of values) = 11.25 (mean of x and f combined)
To 1 dec pl.
= 11.3
Hope that makes sense