A researcher collected the following stress-level ratings (on a scale of 1 to 30) from a sample of eight students during exam week:
14, 16, 11, 19, 14, 21, 16, 14
What is the mode for this set of data?
141414
151515
15.615.615.6
161616
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.