Question

(a) If the mean of 7, 4, x and 10 is 8, the value of X​

Answer 1

Answer:

x=12

Step-by-step explanation:

mean = sum of all observations /total of observations

mean =7+4+x+10/4

mean =8

8=21+x/4

8×4=21+x

32=21+x

32-21=x

12=x

x=12