NumericalGrader #

When grading math expressions without functions or variables, you can use NumericalGrader instead of FormulaGrader. NumericalGrader is a specialized version of FormulaGrader whose behavior resembles the edX <numericalresponse/> tag.

Configuration #

NumericalGrader has all of the same options as FormulaGrader except:

• tolerance: has a higher default value of '5%'
• failable_evals is always set to 0
• samples is always set to 1
• variables is always set to [] (no variables allowed)
• sample_from is always set to {} (no variables allowed)
• user_functions can only define specific functions, with no random functions

Note that NumericalGrader will still evaluate formulas. If you are grading simple integers (such as 0, 1, 2, -1, etc), you may want to consider using StringGrader instead of NumericalGrader.