Analyze a research article and discuss with the class in the discussion forum how the elements below were used by the researchers to support their study.

Please see attached file with the article/
References

Zhao, M., Liu, Y., Ralescu, D. A., & Zhou, J. (2018). The covariance of uncertain variables: definition and calculation formulae. Fuzzy Optimization & Decision Making, 17(2), 211-232. doi:10.1007/s10700-017-9270-3