Concentration ratios

Question 1

What is a concentration ratio

Answer 1

the collective market share of the largest firm in an industry

Question 2

How do we write concentration ratios?

Answer 2

N(total number of firms):Total market share

Question 3

In a concentration ratio when you see ‘others’ what do you do?

Answer 3

Just ignore it

Question 4

what is the concentration ratio for this example:

A 5% B 19% C 6%

Answer 4

3:30