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Question

In a poem recitation competition, ten participants were recorded following marks by two different judges X and Y.
X1517141311121618109Y1512467931025
Calculate the coefficient of rank correlation.

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Solution

Calculation of Rank Correlation

XR1YR2R1R2=DD2154151391721220014548391366600118753912794391633963618110324109210119105739D2=86

Here, N= 10 and D2=86
nk=16D2N3N=16×8610310=1516990=10.52=0.48
It indicates that there is moderate degree of positive correlation between X and Y-series.


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