3. Factor Analysis Although the math behind factor analysis is well beyond the scope of this class, the technique itself is one that we've seen proving useful several times now. a) What is factor analysis? (1 or 2 sentences is plenty, and you don't have to explain any statistics herejust stick to a very simple version of the general concepts!) Factor analysis is a statistical method used to identify underlying variables, or factors, that explain the patterns of correlations within a set of observed variables. b) What are three examples we've seen so far in this class of ways that factor analysis gives us additional insight into a cognitive phenomenon (construct)? (Hint: all three examples have come up since Lecture 10.) c) For one of the three ways you listed above, please explain what the use of factor analysis allows us to conclude that we couldn't have by simply measuring a single variable