To calculate the standard deviation of those numbers: 1  1. 2  Work out the Mean (the simple average of the numbers). 3  2. Then for each number: subtract the Mean and square the result. 4  3. Then work out the mean of those squared differences.
General Practice. In brief: Blood sugar and food. The carb in the popcorn will be start to be absorbed into your blood stream within 30 min, but if your insulin response is good, your blood sugar may not go up at all. If you have type 1 diabetes, it would depend on how much insulin you take. In brief: Blood sugar and food.
Medium-glycemic foods are between 56 and 69 and include foods such as sweet potatoes and raisins. Low-glycemic foods have a rating under 56 and include foods such as nuts and vegetables. Popcorn has a glycemic index of 72 for a 20-gram serving.This would categorize popcorn as being a high-glycemic-index food.Such foods should be eaten as occasional treats and not everyday foods.he glycemic index was created as a way of describing the effects of foods on blood sugar levels. This is done by measuring the rise and fall of blood sugar levels over a specific period of time. The results are then compared to the simple sugar glucose, which has a glycemic index of 100.