SAM uses the following formulas to calculate feedback:
- Graded Words a Minute (GWAM) is GWAM = (characters keyed ÷ 5) ÷ minutes.
- Goal GWAM = GWAM + 2
- Counted Words a Minute (CWAM) is CWAM = [(characters keyed divided by five ) – (errors times two)] divided by minutes.
- Goal CWAM = CWAM + 2
- Accuracy Percentage = correct characters divided by total characters keyed.