By convention, specific symbols represent certain sample statistics. For example, 1  x refers to a sample mean. 2  s refers to the standard deviation of a sample. 3  s 2 refers to the variance of a sample. 4  p refers to the proportion of sample elements that have a particular attribute.
As the name implies, lubricant laxatives make stools slippery. The mineral oil within these products adds a slick layer to the intestine's walls and stops the stool from drying out. Though highly effective, lubricant laxatives are best used as a short-term cure for constipation. Over a longer period, mineral oil can absorb fat-soluble vitamins from the intestine, and decrease certain prescription drugs from being fully absorbed into the body.
As a side note: mineral oil is great for constipation; a tablespoon at a time. Not as a thin coat on cast iron! Soap does strip away some of the seasoning. It is best to put a little bit of water in the bottom of the pan and heat it into it bubbles over low heat.Once bubbling, dump the water and wipe out the pan. Also, while it's still warm wipe a thin coat of oil in the pan.s a side note: mineral oil is great for constipation; a tablespoon at a time. Not as a thin coat on cast iron! Soap does strip away some of the seasoning. It is best to put a little bit of water in the bottom of the pan and heat it into it bubbles over low heat. Once bubbling, dump the water and wipe out the pan.