Variance is a statistical measure which tells us how measured data vary from the average value of the set of data.
2. pertaining to or located near the sciatic nerve or vein. sciatic nerve a nerve extending from the base of the spine down the thigh, with branches throughout the lower leg and foot; it is the widest nerve of the body and one of the longest. sciatica is pain or inflammation along the course of this nerve. See anatomic Table of Nerves in the Appendices and see Plates.
Video Transcript. The sciatic nerve is the longest and largest nerve in the human body, running from the lower back through the back of the leg, and down to the toes.The sciatic nerve starts as a collection of nerve fibers in the lower spine.ideo Transcript. The sciatic nerve is the longest and largest nerve in the human body, running from the lower back through the back of the leg, and down to the toes.