Allaire, JJ, Yihui Xie, Jonathan McPherson, Javier Luraschi, Kevin Ushey, Aron Atkins, Hadley Wickham, Joe Cheng, Winston Chang, and Richard Iannone. 2021. Rmarkdown: Dynamic Documents for R. https://CRAN.R-project.org/package=rmarkdown. R Core Team. 2021. R: A Language and Environment for Statistical Computing. Vienna, Austria: R Foundation for Statistical Computing. https://www.R-project.org/. Xie, Yihui. 2015. Dynamic Documents with R and Knitr. 2nd ed. Boca Raton, Florida: Chapman; Hall/CRC. http://yihui.org/knitr/. Xie, Yihui. 2021a. Bookdown: Authoring Books and Technical Documents with R Markdown. Xie, Yihui. 2021b. Knitr: A General-Purpose Package for Dynamic Report Generation in R. https://yihui.org/knitr/. [Chapter 28 Smoothing | Introduction to Data Science (rafalab.github.io)](https://rafalab.github.io/dsbook/smoothing.html) *** 2021 cloudedknowledge.net