Detecting existence of a hidden mediator between a pair of individual time series.

1 (Bb)), as an overall trend, nonmonotonic trend is found in the values of \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$MT_{X\right

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