EBS - utility of the table FND_STATS_HIST

Hello,
The Conc.Prog « Gather Schema Statistics » allows to gather oracle statistics for all EBS objects (calling the package FND_STATS).
When completed, the table FND_STATS_HIST contains information about the statistics (By default lastrun).
But what's the utility of this table FND_STATS_HIST?
I have read that this table could be use to valorize some variables: have you any information about that?

Thanks in advance,
Armel