A TRANSFORMED YULE CORRELATION COEFFICIENT EMPLOYED IN NUMERICAL GROUPING PROCEDURES ON BACTERIOPHAGE LYTIC SPECTRA
Tom Bergan · Acta Pathologica Microbiologica Scandinavica Section B Microbiology and Immunology · 1972
A transformation of the Yule correlation coefficient (S∍) yielding a range for the values from 0 to 100 was used for the assessment of the relationship between pseudomonas typing bacteriophage lytic spectra. The S∍ compared well with the Jaccard‐Sneath similarity coefficient (SJS), the use of which was reported in a previous communication. Correlation analysis of these two similarity statistics rendered r = 0.8834. The unweighted pair group average cluster analysis based on S∍ ([S∍] UWPGA) has a higher cophenetic correlation than the corresponding weighted pair group procedure rendering correlation coefficients of 0.8122 and 0.7450 respectively. However, the [S∍] UWPGA did not have as high a correlation to the similarity matrix as achieved for the same cluster procedure based on SJS.