Question

the number 3.2 5.8 7.9 and 4.5 have frequency x, (x+2),(x-3)and (x+6) respectively if rhe arithmetic mean is 4.876 find the value of x​

Answer 1

Answer:

3.2×X+5.8×(X+2)+7.9×(x-3)+4.5×(X+6)/4=4.876

3.2x+5.8x+11.6+7.9x-23.7+4.5x+27/4=4.876

21.4x+14.9=4.876×4

21.4x+14.9=19.504

21.4x=19.504-14.9

21.4x=4.694

X=4.694/21.4

X=0.215140