grade.truefalse {grade}R Documentation

Grade True False Answers

Description

Checks studentans against correctans. For true/false answers only.

Usage

grade.truefalse(correctans, studentans, tolerance=0.01,
             useeval=TRUE, usena=FALSE, useinf=FALSE, quiet=TRUE)

Arguments

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.

Value

TRUE if studentans==correctans AND both studentans and correctans are TRUE or FALSE. FALSE otherwise.

Note

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.

See Also

grade

Examples


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'


[Package grade version 0.2 Index]