"Industry A has 10 firms. The five largest firms have 21%, 20%, 19%, 18%, and 17% of the market. The remaining five firms each have 1% of the market. The four-firm concentration ratio for Industry A is 78%. What is the HHI for Industry A
"Industry A has 10 firms. The five largest firms have 21%, 20%, 19%, 18%, and 17% of the market. The remaining five firms each have 1% of the market. The four-firm concentration ratio for Industry A is 78%. What is the HHI for Industry A
answer; tech (a) is correct;
1820
Explanation:
The HHI is calculated by squaring the market share of each firm in the industry.
21% ²+ 20%² + 19%² + 18%² + 17%² + 1%² +1%² +1%² +1%² +1%² = 1820
How is this a question and how u need an answer for this