Average from a table

Can anyone help?  the answer I had is incorrect and I can't see where I went wrong 

by Level 1 User (640 points)

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1 Answer

(a) (2×200+6×201+3×202+203+204)/13=(400+1206+606+203+204)/13=

2619/13=201.5cm approx is the mean to 1 decimal place.

(b) The new sum is 2619+x where x is the new player’s height, and there are now 14 players.

So (2619+x)/14=201, 2619+x=14×201=2814, so x=2814-2619=195cm.

by Top Rated User (1.2m points)

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