2020年9月29日 · You can calculate Herfindahl Index by squaring the market share for each firm (up to 50 firms) and then adding the squares. In a perfectly competitive market, HHI should …

2020年4月1日 · When I calculate it in excel, I summate the market shares of all firms in a particular year to get HHI. Doing same thing for all years, finally I get a series of HHI values for …

2024年4月29日 · Hi, I'm trying to calculate HHI indexes starting from a tab command. Manually, I just grab the percentages and put them in the new variable; but I wonder if there is a way to …

2019年2月20日 · I am seeking similar assistance on HHI index based on total income and total assets per credit union in each country similar to that of Mohina. I would like to compute the …

2021年6月9日 · I think it was working before --hhi was doing what the definitions imply. Otherwise, it comes down to your chosen units. Otherwise, it comes down to your chosen units. A sum of …

2018年10月11日 · I have a data set with 38 firms with quarterly data spanning from 1996 to 2018. I would like to create an HHI index based on total revenue for dataset. Variable name: …

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2018年7月8日 · I want to calculate heteroskedasticity after qregpd regression. Could you please help me how can I perform the test. Are there any other post tests require after qregpd …

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