$\backslash$table$[[$Activity$,$Preceding Activity,Optimistic Time,Most Likely Time,Pessimistic Time$],[$A$,-,4,8,10],[$B$,$A$,4,5,8],[$C$,$A$,6,8,12],[$D$,$B$,$ C$,8,9,16],[$E$,$D$,8,10,15],[$F$,$D$,2,5,8],[$G$,$E$,$ F$,7,12,14],[$H$,$G$,3,7,9],[$I$,$G$,2,11,11],[$J$,$H$,$ I,$1,6,11]]$

What is the variance of the project in minutes? $($Round to the nearest tenth in final answer$)$