Working With Graphs & Charts (AQA A-Level Biology): Flashcards

Dependent variable (what you measured)

Independent variable (what you changed)

Extending line beyond measured data range

Maximum and minimum values from repeat measurements

Standard deviation - calculated measure of data spread

Greater data spread and less certainty about true mean

$\frac{dy}{dx}$ or change in y divided by change in x

Draw tangent at steepest point, then calculate gradient

Plot two variables to identify potential correlations

Scientifically invalid, leads to incorrect conclusions