A Graphical Technique for Displaying Correlation Matrices

James A. Koziol, Joel E. Alexander, Lance O. Bauer, Samuel Kuperman, Sandra Morzorati, Sean O'Connor, John Rohrbaugh, Bernice Porjesz, Henri Begleiter, John Polich

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A recent multilaboratory study to investigate phenotypic and genotypic markers for alcoholism is described. A preliminary investigation of the reliability of electroencephalographic data amassed at six laboratories was undertaken; data from each laboratory could be usefully summarized with sample correlation matrices. A graphical method for depicting these correlation matrices is presented. The Larntz-Perlman procedure for assessing the equality of correlation matrices can immediately be incorporated into this graphical technique. The experimental data from the preliminary investigation are illustrated with the graphical method, which readily conveys large amounts of correlational information and reveals meaningful patterns in the electroencephalographic responses.

Original languageEnglish (US)
Pages (from-to)301-304
Number of pages4
JournalAmerican Statistician
Volume51
Issue number4
StatePublished - Nov 1997
Externally publishedYes

Fingerprint

Correlation Matrix
Graphical Methods
Immediately
Equality
Experimental Data
Graphics
Correlation matrix

Keywords

  • Electroencephalography (EEG): Event-related brain potential (ERP)
  • Fisher z transformation
  • Larntz-Perlman procedure
  • P300

ASJC Scopus subject areas

  • Mathematics(all)
  • Statistics and Probability

Cite this

Koziol, J. A., Alexander, J. E., Bauer, L. O., Kuperman, S., Morzorati, S., O'Connor, S., ... Polich, J. (1997). A Graphical Technique for Displaying Correlation Matrices. American Statistician, 51(4), 301-304.

A Graphical Technique for Displaying Correlation Matrices. / Koziol, James A.; Alexander, Joel E.; Bauer, Lance O.; Kuperman, Samuel; Morzorati, Sandra; O'Connor, Sean; Rohrbaugh, John; Porjesz, Bernice; Begleiter, Henri; Polich, John.

In: American Statistician, Vol. 51, No. 4, 11.1997, p. 301-304.

Research output: Contribution to journalArticle

Koziol, JA, Alexander, JE, Bauer, LO, Kuperman, S, Morzorati, S, O'Connor, S, Rohrbaugh, J, Porjesz, B, Begleiter, H & Polich, J 1997, 'A Graphical Technique for Displaying Correlation Matrices', American Statistician, vol. 51, no. 4, pp. 301-304.
Koziol JA, Alexander JE, Bauer LO, Kuperman S, Morzorati S, O'Connor S et al. A Graphical Technique for Displaying Correlation Matrices. American Statistician. 1997 Nov;51(4):301-304.
Koziol, James A. ; Alexander, Joel E. ; Bauer, Lance O. ; Kuperman, Samuel ; Morzorati, Sandra ; O'Connor, Sean ; Rohrbaugh, John ; Porjesz, Bernice ; Begleiter, Henri ; Polich, John. / A Graphical Technique for Displaying Correlation Matrices. In: American Statistician. 1997 ; Vol. 51, No. 4. pp. 301-304.
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