Least-squares linear regression analysis. The presentation in Portuguese referring to this work is available for viewing on the canvas, at the link: https://www.canva.com/design/DAEv6fEgswk/optaJig6W-GEKV86irA2Eg/view?utm_content=DAEv6fEgswk&utm_campaign=designshare&utm_medium=link&utm_source=sharebutton