Question

What is the mean of -15, -12,8, and 9?​

Answer 1

Answer:

mean = -0.25

Step-by-step explanation:

Explanation:-

mean:- The sum of all the observations and then divided the number of observations and it is denoted by 'μ'

given data is -15 , -12 , 8 and 9

Given observations is '4' so n = 4

$mean= \frac{-15-12+8+9 }{4}$

$mean= \frac{-27+17}{4}$

$mean = -0.25$

The mean of given data is - 0.25