Question

in a deviation problem £fidi= _12,a=15 and £fi=20 then find mean x​

Answer 1

Answer:

mean x=15.6

Step-by-step explanation:

mean=a+£fidi/£fi

x=15+12/20

x=15+0.6

x=15.6

Answer 2

Answer:

in a division problem σfidi=-12 and σfi=20 then x =