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.
common bile duct a duct formed by the union of the cystic and hepatic ducts; see also bile ducts. cystic duct the passage connecting the gallbladder neck and the common bile duct.efferent duct any duct that gives outlet to a glandular secretion.ejaculatory duct the duct formed by union of the ductus deferens and the duct of the seminal vesicles, opening into the prostatic urethra on the colliculus seminalis.ommon bile duct. a duct formed by the union of the cystic and hepatic ducts. See also bile duct. cystic duct. the passage connecting the gallbladder neck and the bile duct.