I am a newbie to this site, and I apologise for the request as the first post.
I run a site that collects prices from grocery stores in Australia and compares them historically. What I am after is any ideas on the kinds of statistics I should be getting from these prices. Have a look here for an example of the price 1kg Cheese over time:
Mainland tasty Cheese 1kg
At the moment I calculate the maximum price, minimum price, and average, and then do some simple comparing of the current price to those values.
Does anybody have any ideas on the kinds of stats I could/should be running on these? Any ideas at all are muchly appreciated.