Graphs

• Raw data tables show the record of individual data points collected from participants.
• Frequency tables are logs of the number of times an event occurs. These are in the form of tally charts.
• Bar charts summarise the frequency of categorical / nominal data. The bars on the chart do not touch and the chart shows multiple variables.
• Pie charts are circular graphs representing all the data in a data set. Each wedge represents a portion of one category that forms a part of the data set.
• Scattergrams display the relationship between two co-variables. They can display positive or negative relationships. The stronger the relationship, the more tightly clustered the points are.
• Histograms display the frequency of continuous numerical data. In this graph, the bars do touch as it shows continuous data, not categorical.
• Line graphs display a comparison of two sets of continuous data represented by a line.