OCR GCSE Mathematics · J560
Specification 12.02a · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Foundation), Paper 4 (Higher), Paper 5 (Higher), Paper 6 (Higher)
Revise: Comparative Bar Charts and Time Series DataThe rise to quarter 2, dip in quarter 3 and rise again to quarter 4 occurs in both years. That repeating pattern is seasonal variation. A line between quarterly observations helps display the pattern; it does not mean a value was actually recorded between those quarters.