Organising and Displaying Data

Organising and Displaying Data in NSW Year 8 maths (NESA outcome MA4‑DAT‑C‑01) starts with a frequency table, using tallies and class intervals of equal width that do not overlap, then turns the table into a graph.

You will draw and read sector graphs, with each angle found from \(\frac{\text{frequency}}{\text{total}} \times 360^\circ\), divided bar graphs, dot plots and stem-and-leaf plots, find a modal class and choose the best graph for a set of data. You will also spot a misleading picture graph and give every display a title, labels, a scale and a source. Rainfall, travel to school and household water use are typical examples. It is part of Year 8 Investigating Data.