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If statistical estimation of sample size is at all attempted,it should be realized that the estimates of the population variance don't vary from country to country.
Dividends
Funds distributed by a company to its shareholders, typically from the company's earnings.
Gross Margin
Gross margin is the difference between revenue and cost of goods sold (COGS) expressed as a percentage of revenue, indicating the efficiency with which a company produces goods.
Operating Expenses
Expenses incurred through normal business operations, such as rent, utilities, and salaries, but not including cost of goods sold.
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