Scores on a cell phone use questionnaire have a mean of 18, a median of 14 and a mode of 11. Most scores are between 8 and 16, and a few scores are above 40.
Explain why these scores are not normally distributed.
56 exam-style questions on Oxford AQA IGCSE Psychology 1.5 Data handling, covering 1.5.1 Quantitative and qualitative data, 1.5.2 Primary and secondary data, 1.5.3 Mathematical expressions, 1.5.4 Measures of central tendency and range, 1.5.5 Frequency tables and diagrams, 1.5.6 Charts for data display, and 1.5.7 Normal distribution. Each one has a worked solution and a mark scheme showing where the marks go.