grade (version 0.2-1)

grade.truefalse: 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.

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'