Rank Correlation


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Rank Correlation

In statistics, the extent to which two rankings match each other. There are various systems to calculate rank correlation. However, rank correlation is expressed on a scale from -1 to +1. A measure of -1 indicates the rankings disagree perfectly (meaning they are opposite one another), while a measure of +1 means they agree perfectly (meaning they are the same). A measure of 0 means the rankings are independent of one another.
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The non-parametric statistics measures were derived from the grain yield data and Spearman's rank correlation between parametric and nonparametric methods was estimated to assess the interrelationship and similarity among them.
Table II (a and b) show the results of Spearman Rank Correlation Tests between select demographic variables and dental injury knowledge and management questions respectively.
The results of Spearman's rank correlation analysis indicated that tie strength was positively correlated with social behavior and positive feedback (see Table 2).
The correlation between CD133, WWOX and E-cadherin: Spearman rank correlation analysis showed the expression of CD133 was negatively correlated with WWOX and E-cadherin in samples (p<0.
Spearman rank correlations between EBV for first parity and for sums of second to last parity reproduction traits for the top 10%, 25%, and 50% of L and Y boars are shown in Table 5.
of articles evaluated 200 300 Articles using no statistics, % 30 6 Descriptive methods only, % 12 5 Articles using statistical tests, % 58 90 1 Student t test 19 59 2 Regression/ANOVA 14 42 3 [chi square] test 15 9 4 Mann-Whitney test (rank sum) 9 22 5 Fisher exact test 14 6 Survival analysis 13 14 6 Kaplan-Meier/log-rank 13 13 7 Cox regression 9 8 Multiple comparison adjustment 1 29 8 Tukey 1 11 9 Bonferroni 1 8 10 Newman-Keuls 0 4 11 [kappa] Statistic 4 1 12 ROC analysis 5 2 13 Logistic regression 4 1 14 Spearman rank correlation 3 5 15 Kruskal-Wallis test 4 6 16 Pearson correlation statistic 4 3 17 Normality test 2 2 18 McNemar test 1 0 Other tests 4 5 Avg tests per article (g) 1.
Agreement among BMD, BMI, and osteocalcin with non-pharametric method are listed in Table 2, with spearman rank correlation.
Parameters###Spearman's rank correlation coefficient r- value###p-value
s]-Spearman rank correlation coefficient (1) For testing null hypothesis of zero correlation Note: Despite the high correlations, they are not significant because of the small sample size (n=5) TABLE 7: Correlations after 6 months of therapy or Post-treatment Correlation of With [R.
Experimental data were statistically analysed using Mann-Whitney and Spearman's rank correlation tests.
According to Spearman rank correlation test there was no significant relationship among the TL vs.