Editing Typing (section)

====Total error rate====
The classes described also provide an intuitive definition of total [[error]] rate:

* ''Total Error Rate'' = ((INF + IF)/ (C + INF + IF)) * 100%
* ''Not Corrected Error Rate'' = (INF/ (C + INF + IF)) * 100%
* ''Corrected Error Rate'' = (IF/ (C + INF + IF)) * 100%

Since these three error rates are ratios, they are comparable between different devices, something that cannot be done with the KSPC statistic, which is device dependent.<ref>{{cite web |url=http://www.soukoreff.com/academic/chi03 |title=Soukoreff, R. W., & MacKenzie, I. S. (2003). Metrics for text entry research: An evaluation of MSD and KSPC, and a new unified error metric. Proceedings of the ACM Conference on Human Factors in Computing Systems - CHI 2003, pp. 113-120. New York: ACM. |access-date=2013-05-16 |archive-date=2011-08-24 |archive-url=https://web.archive.org/web/20110824164440/http://soukoreff.com/academic/chi03/ |url-status=live }}</ref>