Graphs, charts and tables are used to represent data (information) and make it easier to understand.
Data means information. So interpreting data just means working out what the information is telling you. Information is sometimes shown in tables, charts and graphs to make the information easier to read. It is important to read all the different parts of the table, chart or graph.
A table is used to write down a number of pieces of data about different things.
The title of the table tells us what the table is about.
The headings tell us what data is in each column.
Tally marks are used for counting things. They are small vertical lines (like the number 1) each one representing one unit. The 5th tally mark in a group is always drawn across the first four - as this makes it easier to count the total in groups of five.
Bar charts are one way of showing the information from a frequency table. This bar chart represents the data from the table above: