Question

if the mean of 6 observations 76 x 60 78 62 66 is 69 then vale of x is ___ ​

Answer 1

Answer:

(76+x+60+78+62+66)/6 = 69

(342+x)/6 = 69

57 + x/6 = 69

x/6 = 12

x = 72

Answer 2

Answer:   x = 72

Step-by-step explanation:

$\frac{76+x+60+78+62+66}{6} = 69$

76+x+60+78+62+66 = 414

         x+342 = 414

               x = 72