I got the stats from Kenpom.com. Ken Pomeroy is a stat guy who developed an RPI formula before the NCAA released theirs. He also was one of the pioneers of Tempo free stats - basically stats that are centered around production regardless of how quickly a team plays or how many possessions they have in a game.
He calls the number of possessions a team plays per game "tempo". Last year ISU averaged around 65 possessions per game, which was the 240th slowest team in the country and pretty much right on par with what McDermott has done since Pomeroy started keeping track of the stat. Tennessee for example played at a much quicker pace of about 72.5 possessions per game. Thus, more possessions, quicker tempo.