Grading multiple choice with several options
I am creating a graded exam and have several multiple choice questions that require more than one answer. My issue is I want to give credit for the correct answers even if they don't choose all of the correct answers. For example, the question is worth 3 points (each correct answer is worth one point) if they get all answers correct. But, they can also get one or two points if they only choose one or two correct answers.
All the options I am seeing is an all or nothing type scale. On some questions there is an option to grade based on question or answer. I do not get this option with multiple choice questions with multiple answers.
Thank you for your help,