Two primary features of the tropical Pacific climate are the Intertropical Convergence Zone (ITCZ) and the El Nino/NiÃ±o Southern (OSCILLATION). Enso THE itcz is the-circum global zone of convergence of the northern and southern trade winds that results in a band of heavy rainfall near the. equatorwo primary features of the tropical Pacific climate are the Intertropical Convergence Zone (ITCZ) and the El Nino/NiÃ±o Southern (OSCILLATION). Enso THE itcz is the-circum global zone of convergence of the northern and southern trade winds that results in a band of heavy rainfall near the. equator
Factor analysis is a statistical method used to describe variability among observed, correlated variables in terms of a potentially lower number of unobserved variables called factors.For example, it is possible that variations in four observed variables mainly reflect the variations in two unobserved variables.xploratory factor analysis (EFA) is used to identify complex interrelationships among items and group items that are part of unified concepts. The researcher makes no a priori assumptions about relationships among factors.
Power analysis. The figure shows the six variables involved in a power analysis. They are interrelated such that if any five of them are specified, the sixth one can be estimated. Normally, the power analysis is used to estimate sample size. But if that is fixed (e.g. only 20 subjects are available) then it can be used to estimate the signal or the power of a proposed experiment.