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by | Dec 22, 2013 | Publications. VIX is a measure of expected volatility calculated as 100 times the square root of the expected 30-day variance (var) of the S&P 500 rate of return. The variance is annualized and VIX expresses volatility in percentage points.
The crude death rate can be calculated by taking the number of deaths caused by a disease and dividing that number by the total population at risk of contracting that disease. The decimal is then multiplied by a constant, usually 1,000 or 100,000, to give a whole number. Continue Reading.