> Look, there was a straight line for a moment there!

Actually it's not. The last week is not complete. And the first weeks are before the start of the rally.

http://bitcoincharts.com/charts/mtgoxUSD#rg60zigWeeklyzczsg2013-01-09zeg2013-02-14ztgMzm1g10zm2g25zl

All this data are included in the table in my post, calculations say the deviation is still small.

And I didn't say anything about the processes behind the data - I only showed you the data, that's it. I know that technical analysis is not well-grounded at best, http://www.scientificamerican.com/article.cfm?id=patternicity-finding-meaningful-patterns etc.