Media type: E-Article Title: Lines of Best Fit by Graphics and the Wald Line Contributor: Duffin, R. J. imprint: Informa UK Limited, 1991 Published in: The American Mathematical Monthly Language: English DOI: 10.1080/00029890.1991.12000800 ISSN: 0002-9890; 1930-0972 Keywords: General Mathematics Origination: Footnote: Access State: Open Access