Comment 4 for bug 1373463

I actually don't find any statistics but lot of websites advising to disable mobile data with GPS or Wi-Fi to avoid finishing out of battery. Here are few of them :

http://www.androidpit.com/how-to-save-battery-life
http://smallbusiness.chron.com/uses-battery-3g-wifi-27139.html
http://mobileoffice.about.com/od/mobile-devices/tp/How-To-Improve-Your-Cell-Phone-Battery-Life.htm

If I find statistics I will give you them. But you will find that it's very often advised to prefer Wi-Fi over cellular data to save battery : this prove that cellular data uses even more power than Wi-Fi (it depends, of course, how much you receive these two networks : a very good cellular is better than bad Wi-Fi, but when you are moving (train, car...), you often pass by bad cellular network.

More of that, another reason that make cellular data using more power is that, when you have it enabled, there are a lot of background process that use the cellular network to share data (searching updates, mail, twitter notifications...), and of course, to send data, the phone use battery it wouldn't used if it didn't send these.

I "test" a lot of time in the train to go back home (ie when I forgot to switch off data) : with cellular data, I don't have battery at the end, without data, I still have some.