Quantitative Evaluation

Quantitative Evaluation

• GOMS predictions that can be made before the system is bought or built
  • skilled performance time
  • method learning time
  • likelihood of memory errors
  • calculate human cost in system
    • training
    • cost of daily use

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These quantitative predictions can be used to calculate human cost in a

system to train people,

The cost involved with using a system day in and day out and the cost from possible errors and error recovery.