Question

i need help figuring out this question. the mean of the data set is 15. what number is missing? 18, 16,___, 9, 12, 23

Answer 1

Here’s the correct answer below

Answer 2

12

Explanation:

mean = (sum of values)/(number of values)

Let x = missing value.

mean = (18 + 16 + x + 9 + 12 + 23)/6

(18 + 16 + x + 9 + 12 + 23)/6 = 15

78 + x = 90

x = 12

Answer: 12