And, again, standard deviation and variance are measures of dispersion around the mean. They permit you to make probabilistic statements about how likely any result is to be any particular distance to either side of the mean. That last part is important. Variance does NOT signify just one-sided movement (for example, to the left, or losses). It applies equally to both sides. Analogously, in the stock market, volatility refers to movement in either direction, up or down, and not just to downside movement. Of course, you wouldn't know that by watching TV.

It's fine to say that you don't understand a term. That's why we're here. But when we're talking about precise mathematical experssions, it's a little silly to make up your own definitions or offer "opinions" of what you think they may mean. We don't ask, "What is your opinion of 2 + 2?" This isn't social studies.

Don