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.
The sciatic nerve is one of the longest nerves in the human body. At its thickest point, it can measure the width of a thumb. This nerve starts at the backâs lumbar region and continues all the way down the back of the legs, ending at the toes. The sciatic nerve is made up of two different branches, one branch for each side of the spine.