It measures how far each number in the set is from the mean (average), and thus from every other number in the set. Variance is often depicted by this symbol: σ 2. It is used by both analysts and ...

Also, anatomical differences could mean that one person cries first from one eye over the other. However, there is no need for concern if this occurs. The biological process of crying generally ...

In the most intimate video she's ever released, the Princess of Wales revealed she has finished her course of chemotherapy treatment. The deeply moving clip, released on Monday, shows Kate look up ...

with five hidden meanings also spotted in the short video clip. In the video, which runs for just three minutes and was shot by Will Warr at the Wales’ Norfolk home last month, a number of key ...

In Mean Girls, Lacey Chabert's Gretchen Wieners always wanted to make "fetch" a term for cool, despite the hate that Regina George (Rachel McAdams) had for it. She's finally done it in the best ...

Mean corpuscular hemoglobin (MCH) is a blood test used to measure the average amount of hemoglobin in your red blood cells. Hemoglobin is the protein in red blood cells that carries oxygen to tissues ...