Collecting and interpreting data through tally charts and graphs

What is a tally chart?

Tally charts are used to collect data quickly. Filling in a chart with marks representing numbers is faster than writing out words or figures and the data is collected into sub-groups immediately, making it easy to analyse. Tally charts are used to construct bar charts or pictograms. Watch the following videos to understand better how this works.

There are some essential parts each graph must have. Don't forget to include them! Information will change according to the topic you are working with. For example, if your graph is about how many people like a specific type of music you will write the music styles instead of colours. 

There are many different types of charts and graphs. Some of the most common ones are line graphs, bar graphs and pie charts. 

Line graphs show you how numbers have changed over time. They are used when you have data that are connected. They help you to show trends. For instance, average night time temperature in each month of the year.

Bar graphs are used to show numbers that are independent from each other. For example, data may include things like the number of children who like to play basketball, football or table tennis.  

Pie charts show you how a whole is divided into different parts.