Final answer:
CDI (Category Development Index) and BDI (Brand Development Index) are metrics used to measure the sales performance of a market category and a specific brand within a market segment, respectively.
Step-by-step explanation:
The terms CDI and BDI are important metrics used in marketing and advertising. CDI, or Category Development Index, measures the sales performance of a category of goods or services within a specific market in comparison to the average category sales in the overall market. It is a key indicator of market potential and category attractiveness.
BDI, or Brand Development Index, on the other hand, evaluates the sales performance of a specific brand within a market segment against the average performance of that brand across all markets. It helps businesses understand where their brand is overperforming or underperforming compared to its average performance nationwide, guiding targeted marketing efforts.