This question is about Item Analysis for Constructed responses on a test. (Norm-referenced test)

Use the information from the table below to do the following:

(i).  Determine the Item Difficulty Index (P) and the Item Discrimination Index from the information provided.

(ii).  Prepare graph(s) for the information at (i) above. 

(iii).  Give a detailed analysis of the students' performance using Item Difficulty Index ,  item discrimination index, measure of central tendency, standard deviation

(iv).  Detailed reflections on the results and recommendations for improving the items and instruction.

 

Item Number Max Score Student's Name Tom Jenny Mark Susan Peter Amy Anabel Carol Jason Penny Jonathan Keol Total 1 10 8 10 10 5 0 7 5 9 8 10 8 9 2 10 6 8 10 5 5 7 6 8 6 8 8 8 3 10 10 8 8 7 7 6 5 10 6 10 10 7 4 10 8 8 8 5 10 6 5 10 5 8 5 9 Total 40 32 34 36 22 22 26 21 37 25 36 31 33