| grade.truefalse {grade} | R Documentation |
Checks studentans against correctans. For true/false
answers only.
grade.truefalse(correctans, studentans, tolerance=0.01,
useeval=TRUE, usena=FALSE, useinf=FALSE, quiet=TRUE)
correctans |
TRUE or FALSE or a string |
studentans |
TRUE or FALSE or a string |
tolerance |
a string or numeric representing the accepted component wise tolerance |
useeval |
TRUE or FALSE indicates whether or not to use 'eval' on strings |
usena |
TRUE or FALSE indicating whether or not NA is an accepted value |
useinf |
TRUE or FALSE indicating whether or not Inf and -Inf are accepted values |
quiet |
TRUE or FALSE. If TRUE there are more warning messages when checks fail. Can be helpful for debugging. |
TRUE if studentans==correctans AND both
studentans and correctans are TRUE or FALSE. FALSE otherwise.
The grade main page contains a discussion of the
common parameters correctans, studentans, useeval, usena,
useinf, quiet. grade.truefalse does not accept usena
or useinf. Setting usena=TRUE or useinf=TRUE will
result in a warning. tolerance is not used in
grade.truefalse. These arguments are included for compatibility
with the other function calls in grade.
grade.truefalse(TRUE, TRUE) # TRUE
grade.truefalse(TRUE, "TRUE") # TRUE
grade.truefalse("FALSE", "TRUE") # FALSE
## depending on your environment settings, this next example may work.
#grade.truefalse("F", F) # TRUE if your environment has not redefined 'F'