Answer:
17
Step-by-step explanation:
Given the data:
12, 18, x, 5
Average of the numbers = 13
The value of x will. Be
Sum of 12, 18, x and 5 divided by the number of data values.
Mean(average) = Σ(X) / n
n = number of values
13 = (12 + 18 + x + 5) / 4
13 = (35 + x) / 4
13 * 4 = 35 + x
52 = 35 + x
x = 52 - 35
x = 17
