If the mean of the distribution is 2.6, then the value of γ is
24
13
8
3
mean =∑i=1n fixi∑i=1n fi∴ 2.6=1×4+2×5+3×y+4×1+5×24+5+y+1+2⇒ 31.2+2.6y=28+3y⇒ 0.4y=3.2⇒ y=8