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.
Sciatic nerve â The sciatic nerve is the largest single nerve in the body, extending from the back of the pelvis down the back of the thigh. It is the primary nerve of the leg and is responsible for innervating the muscles in the hip and lower limbs (including the tibial nerve and common fibular nerve).