When tallying data for a frequency table, why is the fifth mark drawn across the previous four? Shade one box.
To show that the category is the mode.
To make the marks easier to count.
To show that the data are continuous.
To separate primary data from secondary data.
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.