Business 9609 Chapter.21 8.1 Marketing analysis A level GCE CIE Chapter 21 Topics Elasticity: Different types of PED & calculations, impact on business decision, & limitations of PED conceptProduct development: process of NPD, sources of new ideas, & the importance of R&DSales forecasting: importance, time-series & moving trend analysis & calculations, & impact on business decisionsBusiness 9609 AS & AL Y11 & Y 12 * Updated for the 2026-2028 Cambridge syllabus * Play in slideshow & fullscreen *