An educational psychologist investigated the impact of a mindfulness intervention on exam anxiety. They recorded the anxiety scores (on a scale of 10 to 80) of 6 students before the intervention:
54,23,41,11,37,15 54, 23, 41, 11, 37, 15 54,23,41,11,37,15What is the range for this set of anxiety scores?
303030
393939
434343
545454
513 exam-style questions on OCR A Level Psychology Data recording, analysis and presentation. Each one has a worked solution and a mark scheme showing where the marks go.