M. Topal  , B. Emsen  , A. Dodologlu  , 
    Path Analysis of Honey Yield Components Using Different Correlation Coefficients in Caucasian Honey Bee,
    Journal of Animal and Veterinary Advances,
    Volume 7,Issue 11,
    2008,
    Pages 1440-1443,
    ISSN 1680-5593,
    javaa.2008.1440.1443,
    (https://makhillpublications.co/view-article.php?doi=javaa.2008.1440.1443)
    Abstract: An experiment was conducted, using coefficients of Pearson correlation (r), Spearman’s rho (r<SUB>s</SUB>) and Kendall’s tau (&#964;) to invastigate direct and indirect effects among honey yield and brood area, number of frames covered with  bees,  weight  gain  during nectar flow period, sealed queen cell height, emergence weight and pre-oviposition period in Caucasian honey bees. Correlation coefficients between honey yield and weight gain during nectar flow period were found positive and higher than that of other correlations in Caucasian honey bee. Number of frames covered with bees had significant positive relationship with honey yield and weight gain during nectar flow period according to r, r<SUB>s</SUB> and   in Caucasian. Results derivatives exhibited with respect to the 3 relation measures similarity. The direct effect of WGN and BA on honey yield and indirect effect of NFB on honey yield via WGN were found high and positive in respect of r, r<SUB>s</SUB> and  &#964;
    Keywords: Caucasian honey bee;path analysis;spearman’s rho;Kendall’s tau