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N industry consists of three firms with sales of $360,000, $650,000, and $265,000.

a. calculate the herfindahl-hirschman index (hhi)

1 Answer

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These three together form total market, so here we have to add up everything to know volume of the market

A+B+C = 1,275,000 is the total market

Then we have to calculate individual market share

which would eb 1) 28.2%, 2) 50.9%, 3) 20.8%

This can be calcualated by simple percetage calculation. ( 1275000-360000/1275000*100)-100 will give what share each has.

Then we apply HHI formula

HHI = s1^2 + s2^2 + s3^2 + ... + sn^2

HHi is nothing but squaring of each of the percentages and adding them up

(28.2)2 +(50.9)2 +(20.8)2

812+2590+432 = 3834

HHI of 3834 shows it is highly competitve market.

User Paradasia
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