Almost all of the students' scores are below the average. Therefore, in this case the mean is not a good representative of the central tendency of this sample. The median, on the other hand, is the value which is such that half the scores are above it and half the scores below. So in this example, the median is 8. There are four scores below and four above the value 8. So 8 represents the mid point or the central tendency of the sample.
Definition of duct. 1 : a bodily tube or vessel especially when carrying the secretion of a gland. 2a : a pipe, tube, or channel that conveys a substanceb : a pipe or tubular runway for carrying an electric power line, telephone cables, or other conductors.
bile ducts the canals or passageways that conduct bile. There are three bile ducts: the hepatic duct drains bile from the liver; the cystic duct is an extension of the gallbladder and conveys bile from the gallbladder. These two ducts may be thought of as branches that drain into the âtrunk,â or common bile duct. The common bile duct passes through the wall of the small intestine at the duodenum and joins with the pancreatic duct to form the hepatopancreatic ampulla, or ampulla of Vater. At the opening into the small intestine there is a sphincter that automatically controls the flow of bile into the intestine.