Transform a dual-axis visual claim into chart forms that match the evidence question.
Paid spend and signups are plotted on two y-axes. The title says spend drove signup growth, but the chart only visually aligns two differently scaled lines. Match the chart form to the claim: timing, relative movement, or relationship. The common shortcut is to keep the overlay and soften the title. The visual still encourages the stronger causal belief. Extract claim Write the chart's implied sentence: paid spend caused signup growth. This is Cairo's reader-belief test. The viewer's likely sentence is stronger than the chart can support. Separate questions Timing asks whether events co-occurred. Relative movement asks whether both changed similarly.…
Sign up free — one personalized lesson every day, matched to your role and goals.
Already have an account? Sign in