can someone explain this in depth please, what is the (n) value, how are all of the numbers reached, etc.

Event Mean (average) 106.67 Add up the squared deviations 466.67 Divide by n-1 233.33 <. varianc outcome x minus x-bar square difference standar check variance using excel function you can change the values to whatever want and use those test yourself standard deviation coefficient of variation dev mean min max will lie within deviations>