Once you have collected your data, you can look for patterns that will give you new information. For example, humans usually get taller as they grow from a child to an adult. Look at the graph below. It shows the average height of girls from birth until age 18.
You can find patterns in other kinds of data, too. For example, as days pass, the lighted part of the moon changes shape in the same pattern every month. Scientists used this repeating pattern of data to figure out how the moon moves in space.