Question

The mean mass of 11 players in football team is 65.2kg .The mean mass of the team plus a substitute is 65.4kg what is the mass of the substitute

Answer 1

so you would start of by doing 65.2(11) to find out what their actual mass is. 65.2x11= 717.2kg
then we would do the same for the team plus the substitute, so 65.4x11= 719.4
so 719.4-717.2= 2.2kg