If you understand the definition of a mathematical function, a good way to judge it is that any line drawn parallel to the y-axis intersects with the values in the function’s curve only once. The same ...

Pie charts show percentages as a circle, divided into segments. A pie chart could be used to show how students travel to school. Each piece of data is shown as a proportion of 360, because there are ...

Scatter graphs enable correlations between disease and lifestyle choices, and correlations between disease and environmental or industrial conditions, eg possible effects of pesticides, industrial ...