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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.
How to Calculate Net Carbs. In the Atkins Nutritional ApproachÂ®, the Net Atkins Countâ¢ is calculated by subtracting the number of grams of fibre and sugar alcohols (also known as polyols) from the total grams of carbohydrates in whole foods.