My company has their own Moodle instance and we deliver a large number of courses each year. We have developed our own feedback form so participants can answer several questions regarding the course and additional ones specific to the instructors. We would like to be able to conduct trend analysis across several iterations of the same course. Essentially, look at the responses for each question (i.e. total number of responses for question 1, question 2, question 3 etc.) for each course. Then be able to choose a timeframe or select individual courses we want included in that report. Participants are different for each course so don't need to look at individual responses we just want to be able to determine if certain aspects of the course remain steady while others either increase or decrease over time. Essentially, X axis = questions, Y axis - total responses for each each question, colour or bars rating i.e. 1- bad, 2-not so bad, etc. and some way to indicate the date of the course either separating by date.
Is there a plugin or process I can use to view this type of information?