Tài liệu tham khảo

Crawley, Michael J. 2015. Statistics - an Introduction in r (2nd Edition). 2nd ed. Wiley. https://studyr.netlify.app/ref/crawley_2015_statistics_an_introduction_in_r_2nd_edition.pdf#page=77.

Lam, Nguyen Van. n.d. Khoảng Tin Cậy (Confidence Interval) Là Gì? https://youtu.be/TqOeMYtOc1w.

Sheather, Simon J. 2009. A Modern Approach to Regression with R. Springer. https://gattonweb.uky.edu/sheather/book/.

Starmer, Josh. n.d. Confidence Intervals, Clearly Explained!!! https://youtu.be/TqOeMYtOc1w.