On sports day, Nitin jumped 4712 feet and Anil jumped 316 feet. How much farther did Nitin jumped than Anil?
The distance (in feet) jumped by an athlete in a long jump competition are given as : 6.45 , 7.01 , 6.78 , 6.82 , 6.64 , 6.5
What is the mean distance he jumped?