How are overall grades and ranks determined?
The report includes both statistical and distribution grades and ranks. Statistical grades and ranks The overall statistical grades and ranks are based on the weighted sum of the URL’s individual grades and ranks in the following areas: average response time, the standard deviation of the response time, median response time, maximum response time, minimum response time, number of timeouts, and response time distribution. While the weighting function is proprietary, it has the following general characteristics: • Timeouts are heavily penalizes on the argument that site non-availability is extremely bad. • Median response times are weighted fairly highly and average response time somewhat less so on the argument that faster URLs are better than slower URLs. • Standard deviations are included on the argument that consistency is important, although less so than the actual response times. • Max and min response time, while included, have very low weights on the argument that even a very goo
