Google analytics stats:
04 june 2012
- Visits: 4.423
- Unique visitors: 3.558
- Pageviews: 77.352
- Pageviews / visit: 17,49
- Visit length: 00:06:26
- Bounce rate: 1,09%
05 june 2012
- Visits: 4.652
- Unique visitors: 3.825
- Pageviews: 45.087
- Pageviews / visit: 9,69
- Visit length: 00:06:45
- Bounce rate: 19,60%
From one day to another the bounce rate went from 1% to 19%, the pageviews dropped by half so did the pageviews/visit.
The only thing I changed (If I remember correctly) on the site, was an advertisment that used a javascript.
Could this be the reason? and, if it is, how can I know which one is the real stats?