Edinburgh -- Scotland
Found in 832 Collections and/or Records:
Postcard acknowledging Ledermann's letter regarding Bartlett's estimates, which Thomson doubts have the minimum standard error. He discusses the error variances of the regression estimates, referring to a numerical example he has sent.
Thomson asks Ledermann for his opinion on Thomson first draft of his section of their multivariate paper. He asks for Ledermann's advice on a few areas in particular, listing them and any potential problems he thinks may arise.
Thomson outlines his interpretation of Bartlett's work, referring to a letter he sent Bartlett the previous day, for Ledermann's consideration.
Thomson thanks Ledermann for his letter regarding minimum trace and minimum Thorstone [sic] rank which showed they do not always occur together, but Thomson argues that they usually do.
He discusses matrices, referring to the work of Heywood, Spearman, and Thurstone; as well as an article that he would like to write.
Thomson informs Ledermann that Ledermann's two articles, The Orthogonal Transformation of a Factorial Matrix into Itself and On a Shortened Method of Estimation of Mental Factors by Regression have been accepted for publication in Psychometrika.
Thomson asks Ledermann if he will look at Burt's article, The Unit Hierarchy and its Properties, and give his opinion. He also refers to the work of Ledyard R Tucker, and Aitken. He informs Ledermann that he will hopefully have the services of Lawley as Ledermann's replacement.
Thomson and asks Ledermann if his family are OK, telling him they are in his thoughts.