The data in the file shows the test results for a group of 15 students. The students were set 8 questions, each of which were equally weighted. Depending on the accuracy of the students’ answers they were awarded either 0, 1, 2 or 3 marks for each question. The test was set for formative purposes and was intended to assess current student progress on a course.
Calculate the total score for each student and convert this to a percentage. Present these results using an appropriate chart or graph.
Do you believe that the test results are normally distributed? What evidence supports your conclusion?
The tutor for the course is planning additional revision sessions to support students. It is decided that these additional sessions will be compulsory for all students whose mark fell below one standard deviation from the mean.
Calculate the standard deviation for the set of marks and use this to identify which students are required to attend the compulsory revision sessions.
