Better measures of the distribution of scores are the variance and standard deviation. The variance (2) is the sum of the squares of the deviations of the individual test scores (xi) from the mean () divided by the number of scores (n). The standard deviation () is the square root of the variance.
Reducing triglyceride levels is one of the main mechanisms by which fish oil omega-3 fatty acids improve cardiovascular health. With regards to cholesterol, fish oil omega-3 fatty acids can increase the level of âgoodâ cholesterol while lowering âbadâ cholesterol. However, this relationship is not straightforward. In fact, fish oil can raise LDL cholesterol in people with high blood triglyceride levels.
Some believe that it reduces the risk for heart disease. Taking 4-6 grams of fish oil can reduce triglycerides up to 50%. But, cholesterol does not decrease. The benefit of using EPA and DHA at 1-2 grams is less clear. The American Heart Association does recommend at least 1 gram of combined EPA and DHA daily by eating fish at least three times a week.