Bulletin Géodésique (1946-1975)

, Volume 36, Issue 1, pp 29–46 | Cite as

Statistical analysis of discrepancies in levelling with applications to the first-order levelling of the nile delta

  • A. M. Wassef
Notices Scientifiques Communications Présentées a l'Assemblée Générale de Rome, 1954 On Levellings 1953 in Two Lines of About 20 km (In Meridian and Parallel) at Trento


The methods of the analysis of variance and co-variance are used to investigate the variation of the quantity


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  1. 1.
    Wassef, ‘Some Aspects of the Design Analysis and Presentation of Photogrammetric Experiments,’Photogrammetria, July 1952.Google Scholar
  2. 2.
    Cole, ‘Revision of First-Order Levelling in Lower Egypt’,Surv. Dep. Pap. Egypt 44 (1939).Google Scholar
  3. 3.
    Cole, ‘Systematic Error in Spirit Levelling’,Surv. Dep. Pap. Egypt 35 (1925).Google Scholar
  4. 4.
    Fisher andYates, Statistical Tables for Biological, Agricultural and Medical Research, Oliver and Boyd, London 1948.Google Scholar
  5. 5.
    Braaten, Dore, Kukkamäki, Rune andVignal, ‘Note sur l'évaluation de la précision d'un nivellement’,Bull. géod. int. 18 (1950).Google Scholar
  6. 6.
    Hald, Statistical Theory with Engineering Applications, Wiley, New York 1952.Google Scholar
  7. 7.
    Hald, Statistical Tables and Formulas. Wiley, New York 1952. (These tables are more detailed than the tables by Fisher and Yates.)Google Scholar
  8. 8.
    Thompson andMerrington, ‘Tables for testing the homogeneity of a set of estimated variances,’Biometrika, vol. 23, pt IV (1946).Google Scholar

Copyright information

© Butterworths Scientific Publications 1955

Authors and Affiliations

  • A. M. Wassef
    • 1
  1. 1.Survey of EgyptGiza

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