L'analyse des données: before and around.
Late nineteenth century Britain: a social, political, and methodological context for the rise of multivariate statistics.
Linear conform transformation: Errors in both coordinate systems
Linear conform transformation in the case of non-negligible errors in both coordinate systems is investigated. Estimation of transformation parameters and their statistical properties are described. Confidence ellipses of transformed nonidentical points and cross covariance matrices among them and identical points are determined. Some simulation for a verification of theoretical results are presented.