The questionable claim
A chart labels sales growth from EUR300 to EUR400 as +33 percentage points.
Investigate
Identify the unit of analysis, denominator, population or information boundary. What extra evidence would be needed? Write a corrected statement first.
Diagnosis and repair
Sales increased EUR100 or 33.3% relative to April. Percentage points compare percentages: a rate changing from 10% to 12% rises 2 percentage points, or 20% relatively.
Prevention
Add a test or review question that catches the error before publication. Save the original and corrected explanation so your reasoning is auditable.
Try the activity before reading its reference. Keep your sources, commands and assumptions with your work. Companion activities are unsaved self-practice and do not award a certificate or change lesson progress.