As shown in Table 4, the TPDS and its subscales were significantly (inter) correlated with the EDPS and GAD-7 (p's < 0.05).
This is not surprising because the Inuit population is exposed to a complex mixture of OCs, with concentrations of compounds being highly inter correlated.
A further aspect of interest in highly multidimensional data is connectivity, i.e., how much inter correlated are the different variable, here expression levels.
Although statistical tests may identify those features showing correlation with the CpG island methylation, the identified features might be inter-correlated themselves.
Human cognitive abilities inter-correlate to form a positive matrix, from which a large first factor, called 'Spearman's g' or general intelligence, can be extracted.
For example, the reading, mathematics, and science scores from PISA were found to inter-correlate from r = .75 to r = .81 (Reilly 2012) or even from r = .95 to r = .99 (Rindermann 2007).
It is notable, however, that these differences may be attributable to a lack of consistency in the methods and measures used; for example, the various procedures of the behavioral tests of impulsivity which were not always shown to inter-correlate (Enticott et al. 2006).
Species richness of the three taxa was not significantly inter-correlated.
Researchers have suggested that different signals of the same quality should inter-correlate [10], [11], which would support indicator mechanisms in their evolution.
Individual variations and change in general cognitive, language and reading abilities tend to inter-correlate, suggesting possible common etiology in their development (Rhemtulla & Tucker-Drob, 2011).
There is often some overlap in the wording of items from different kinds of scale, so not surprisingly satisfaction, HRQL and personality scales inter-correlate quite highly.
