Mean variance analysis is a component of modern portfolio theory, which assumes investors make rational decisions, and that for increased risk they expect a higher return. Next Up.
sitâ²-in`. 1. an organized passive protest against racial segregation in which the demonstrators occupy seats prohibited to them in public places. 2. any organized protest in which the demonstrators occupy and refuse to leave a public place.
Which means if you sit for five minutes, stand up for 15 minutes to counter that. For a full eight-hour work day, that means standing for six hours of the eight, and sitting for just two.