This document explains what questions are, how partial credit is computed for these questions, why Exam Professor computes partial credit the way it does.
 

What is a Multiple Select Question?

Multiple Select questions are one that allows the student to select multiple answers. In HTML forms, it uses checkboxes (stylized as squares) instead of radio-buttons (stylized as circles).

Multiple select has many names. It is often called multiple answers, multiple responses, multiple correct, or multi-select. 

There are three ways multiple select questions are graded in Exam Professor. 
 

1. All or nothing

Students receive full points only if they select all the correct answers. The student will receive zero points for the entire question if they leave any correct answer unchecked, or check any incorrect answer.  

For example: If this question is worth 10 points, then zero points are awarded.

Item	A	B	C	D	E	F
Correct?	yes	yes	no	no	yes	no
Selected	yes	no	no	no	yes	no

 

2. Right minus wrong

Students receive points equal to the number of correct minus incorrect answers selected. This is done by dividing total points by all possible answers, then adding all correct question points (positive) and subtracting all incorrect question points (negative). Zero points will be awarded as the minimum, even if a student selected all wrong answers.

For example:     If this question is worth 6 total points, then only 2 points are awarded.

(+4 pts) + (-2 pts) = +2 pts

Item	A	B	C	D	E	F
Correct?	yes	yes	no	no	yes	no
Points awarded	+1	-1	-1	+1	+1	+1
Selected	yes	no	yes	no	yes	no

 

3. Correct answers

Students receive points for each correct answer and every incorrect answer left blank. Correct answers left blank, and selected incorrect answers are not counted.

For example:    If this question is worth 3 total points, then only 2 points are awarded.

Item	A	B	C	D	E	F
Correct?	yes	yes	no	no	yes	no
Points awarded	+0.5	0	0	+0.5	+0.5	+0.5
Selected	yes	no	yes	no	yes	no