Question

find the mean of 1 ,2, 3, x is 0 ​

Answer 1

Answer:

Arithmetic mean =

No. of observations

Sum of all observations

⇒0=

4

1+2+x+3

⇒0=6+x

⇒x=−6

Answer 2

Step-by-step explanation:

$Mean = \frac{sum \: of \: observation}{number \: of \: observation} \\ 0 = \frac{1 + 2 + 3 + x}{4} \\ x + 6 = 0 \\ x = - 6$