Standard deviation of a statistical test showed that when .00 before and after trials with knowledge about the diseases caused by work in the offices of different statistical significant level .05.
The standard deviation. 00, when tests showed that before and after trial to have knowledge about diseases caused by office work differ significantly statistical level. 05.
Standard deviation. 00 were not statistical differences before and after the experiment with knowledge about the disease caused by working in the office of the 05.