Liam works at a zoo. he was looking at some data showing the masses of their 5 african elephants. the mean mass of the elephants was 3800kg and the median mass was 3600kg. the heaviest elephant, named omar, was recorded as 600kg. liam then found out that omar's mass was written down incorrectly, and that omar actually has a mass of 7000kg. how will increasing omar's mass affect the mean and median?