{"id":253911,"date":"2025-07-12T08:07:34","date_gmt":"2025-07-12T08:07:34","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=253911"},"modified":"2025-07-12T08:07:35","modified_gmt":"2025-07-12T08:07:35","slug":"extra-credit-the-herfindahl-index-for-a-perfect-monopolist","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/12\/extra-credit-the-herfindahl-index-for-a-perfect-monopolist\/","title":{"rendered":"Extra Credit The Herfindahl index for a perfect monopolist"},"content":{"rendered":"\n

Extra Credit The Herfindahl index for a perfect monopolist (market share = 100%) is: ? 100. ? 10,000. ? 100,000. ? 10.<\/p>\n\n\n\n

The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n

The correct answer is 10,000<\/strong>.<\/p>\n\n\n\n

Explanation:<\/h3>\n\n\n\n

The Herfindahl-Hirschman Index (HHI) is a measure of market concentration, which is used to assess the degree of competition within an industry. The formula for the HHI is:HHI=\u2211i=1N(Si)2HHI = \\sum_{i=1}^{N} (S_i)^2HHI=i=1\u2211N\u200b(Si\u200b)2<\/p>\n\n\n\n

where:<\/p>\n\n\n\n

    \n
  • SiS_iSi\u200b is the market share of firm iii, and<\/li>\n\n\n\n
  • NNN is the total number of firms in the market.<\/li>\n<\/ul>\n\n\n\n

    The market share SiS_iSi\u200b is expressed as a percentage of the total market, so when you square the market share, the value is in percentage terms squared. The HHI can range from 0 (perfect competition) to 10,000 (a pure monopoly).<\/p>\n\n\n\n

    For a perfect monopolist<\/strong>, the market share is 100%. In this case, the HHI would be calculated as:HHI=(100)2=10,000HHI = (100)^2 = 10,000HHI=(100)2=10,000<\/p>\n\n\n\n

    This value of 10,000 indicates that the market is completely dominated by a single firm, meaning there is no competition.<\/p>\n\n\n\n

      \n
    • For a perfectly competitive market<\/strong>, the HHI would approach 0, as many firms each have a very small market share.<\/li>\n\n\n\n
    • For a market with moderate concentration<\/strong>, the HHI would be somewhere in between, depending on how the market shares are distributed.<\/li>\n<\/ul>\n\n\n\n

      In practice, an HHI:<\/p>\n\n\n\n

        \n
      • Below 1,500 is considered a low-concentration market (competitive),<\/li>\n\n\n\n
      • Between 1,500 and 2,500 is considered moderately concentrated,<\/li>\n\n\n\n
      • Above 2,500 is considered highly concentrated.<\/li>\n<\/ul>\n\n\n\n

        Thus, for a perfect monopoly, the Herfindahl-Hirschman Index is 10,000<\/strong>, which signifies the highest possible market concentration.<\/p>\n\n\n\n

        \"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

        Extra Credit The Herfindahl index for a perfect monopolist (market share = 100%) is: ? 100. ? 10,000. ? 100,000. ? 10. The Correct Answer and Explanation is: The correct answer is 10,000. Explanation: The Herfindahl-Hirschman Index (HHI) is a measure of market concentration, which is used to assess the degree of competition within an […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-253911","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/253911","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=253911"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/253911\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=253911"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=253911"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=253911"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}