Shaalaa.com | Rank Correlation Coefficient problem-1
Coefficient of rank correlation between x and y is 0.5 and `sumd_i^2`= 42. Assuming that no ranks are repeated, find the number of pairs of observations.
If the sum of squares of differences of ranks for 10 pairs of observations is 66, find the rank correlation coefficient.
Calculate Spearman's Rank Correlation Coefficient between the following marks given by 'two' judges (A) and (B) to •eight' contestants in the elocution competition:
|Marks by A||81||72||60||33||29||11||56||42|
If the rank correlation coefficient is 0.6 and the sum of squares of differences of ranks is 66, then find the number of pairs of observations.
Compute the coefficient of correlation for the following data :
n = 100 ; `bar x` = 62 , ` bar y` = 53 . σx = 10 ; σ y = 12 ,
`sum ("x"_1 - bar x) ("y"_1 - bar y) = 8000`
Ranking of 8 trainees at the beginning (X) and at the end (Y), of a certain course are given below :
Calculate Spearman's rank correlation coefficient.
Draw scatter diagram for the following data and identify the type of correlation.
|capital (₹ in crore)||2||3||4||5||6||8||9|
|Profit (₹ in lakh)||6||5||7||7||8||12||11|