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Posted to microsoft.public.excel.worksheet.functions




Grading Multiple Choice Exam
I am setting up a spreadsheet for my students' answers to a multiple choice
test. One of the things I want to do is see how many students got each question correct, and that is easy enough to do using COUNTIF. However, I am having a hard time creating a function that will tell me how many questions a student got correct. Suppose the key is in row 1, columns B through K (so B1:K1), and below that I have a row for each student (with student names in column A). So the first student has his name in A2, and his answers in B2:K2. So how do I count the number of cells in B2:K2 which match the corresponding cell in B1:K1? I'm aware that I could do something hideous like =IF(B2=B1,1)+IF(C2=C1,1)+...+IF(K2=K1,1) but there has got to be a more elegant way! I know that I could also create another column for each student that compares their responses to the key row, but it seems like there should be a function to do this. Thanks! 
#2




Answer: Grading Multiple Choice Exam
Yes, there is a more elegant way to count the number of correct answers for each student. You can use the SUMPRODUCT function to compare the student's answers to the key row and count the number of matches.
Now you have a column that shows the number of correct answers for each student. You can use this column to calculate each student's percentage score by dividing their score by the total number of questions and multiplying by 100. For example, if there are 10 questions, you can enter the following formula in cell M2: Formula:
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#4
Posted to microsoft.public.excel.worksheet.functions




Grading Multiple Choice Exam
Thank you so much for the quick reply, that worked fantastic!
Jay "Bernard Liengme" wrote: Use =SUMPRODUCT(($B$1:$K$1=B2:K2)) The $s allow you to copy down the column. The double negation converts Boolean (True/False) to numbers (1/0) so summing can occur. best wishes (I'm glad I'm retired and exam marking is history for me!)  Bernard Liengme Microsoft Excel MVP http://people.stfx.ca/bliengme "Jay Windley" <Jay wrote in message ... I am setting up a spreadsheet for my students' answers to a multiple choice test. One of the things I want to do is see how many students got each question correct, and that is easy enough to do using COUNTIF. However, I am having a hard time creating a function that will tell me how many questions a student got correct. Suppose the key is in row 1, columns B through K (so B1:K1), and below that I have a row for each student (with student names in column A). So the first student has his name in A2, and his answers in B2:K2. So how do I count the number of cells in B2:K2 which match the corresponding cell in B1:K1? I'm aware that I could do something hideous like =IF(B2=B1,1)+IF(C2=C1,1)+...+IF(K2=K1,1) but there has got to be a more elegant way! I know that I could also create another column for each student that compares their responses to the key row, but it seems like there should be a function to do this. Thanks! 
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