The correct option is
D 9.96The lower limit (l) of the modal class =9,
the class size (h) =2,
the frequency (f1) of modal class=25,
the frequency (f0) of the class preceding the modal class=15,
the frequency (f2) of the class succeeding
the modal class =14.
Now, using the formula:
lMode=l+(f1−f02f1−f0−f2)×h=9+(25−15(2×25)−15−14)×2=9+0.48×2=9+0.96=9.96
Therefore, the mode weight of a cylinder is 9.96 kg.