01 / COST & SCALE
Economies & diseconomies of scale
How to read this chart
- Start with the axes.Horizontal: Output. Vertical: Average cost.
- Read the downward section.As output rises, average cost falls → economies of scale.
- Find Q*.The lowest point of this curve → the lowest average cost shown.
- Read the upward section.As output rises further, average cost rises → diseconomies of scale.
As the business expands, average cost falls because it benefits from economies of scale.