Learn how to collect, display and interpret data using charts, graphs and key statistics.
Statistics is the branch of mathematics concerned with collecting, organising, presenting and interpreting data. Data is information — it could be the favourite colours of your class, the temperature each day for a month, or how far different animals can jump. Once collected, data can be displayed in different ways. A tally chart is used to count data quickly. A bar chart uses bars of different heights to compare groups. A pictogram uses pictures or symbols to represent amounts. A line graph is ideal for showing how data changes over time. A pie chart shows data as slices of a whole circle. When interpreting data, we look for patterns and key facts. The mode is the most frequently occurring value. The range is the difference between the highest and lowest values. Being able to read and create different types of charts is an essential mathematical skill used in science, geography, sport, business and daily life.