Alice needs to calculate the average pressure inside a gas cylinder. She has access to both a data table showing the pressure over time and a graph of pressure over time. Which representation is probably most useful to her if she wants a precise answer?

A data table is probably most useful for a precise average because it gives the pressure values as exact numbers. Alice can add those measurements and divide by how many there are. A graph is helpful for seeing trends, but reading precise values from plotted points can be less accurate.

AI-written and checked against the verified answer.