Using a reasonable associated uncertainty for each input factor and including variations in the source rock and measured (234U/238U) ratios, the total combined uncertainty on comminution age in our simulation (for both methods of recoil loss factor estimation) can amount to ±220 280 ka.
The chapter also covers the various methods of factor rotation and estimation of factor scores.
In addition, two methods of factor rotation are available in this program, varimax and judgmental (or manual) rotation.
There are two methods of factor extraction available in the PQMethod 2.33 program: the principal component method and the centroid method.
His method of factor analysis was fully presented in The Factors of the Mind (1940).
In accord with prior psychometric research with clinical populations (e.g., Chou and O'Rourke 2012), the likelihood method of factor extraction with varimax rotation was used.
The method of factor analysis is used to determine the number of reactions and derive an observed stoichiometric space from measured composition and possibly thermal data.
This makes it possible to apply the method of factor sequences of agrogenic transformations in soils, which takes into account different periods of human activities.
In our method of factor analysis we use this Exploratory Factor Analysis (EFA), where the a-priori assumption is that any indicator may be associated with any factor.
The varimax method of factor rotation was used and factors with an eigenvalue > 1 were retained.
