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.
Noun. 1. mineral oil-a distillate of petroleum (especially one used medicinally as a laxative or stool softener). oil-a slippery or viscous liquid or liquefiable substance not miscible with water.1  Facebook.. (Minerals) Brit any oil of mineral origin, esp petroleum. 2. US and Canadian a colourless almost tasteless oily liquid obtained by petroleum distillation and used as a laxative. Also called (in Britain and certain other countries): liquid paraffin.