It's not nearly as simple as it sounds in theory. Consider that you have typos which are from hitting the wrong button - and also typos from hitting the next le

It's not nearly as simple as it sounds in theory. Consider that you have typos which are from hitting the wrong button - and also typos from hitting the next letter before the previous letter. Also when looking at typos it's likely you'd find statistically significant differences for typos by hitting a letter to the left, or right, or prob. of typoing given the letters general position within a layout etc.