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.
1 sit in/on something She sat on a number of committees. 2  sit for something For years he sat for Henley (= was the MP for that constituency). 3  5 [intransitive] (of a parliament, committee, court of law, etc.) to meet in order to do official business Parliament sits for less than six months of the year.