Rank Correlation

A random sample of recent repair jobs was selected and estimated cost, actual cost were recorded.

Calculate the value of spearman’s correlation.

In a partially destroyed laboratory record of an analysis of regression data, the following data are legible : 

Variable of X = 9 

Regression equations : 8x - 10g + 66 = 0 and 40x- 18g = 214

Find Mean values of X and Y on the basis of the above information .

A random sample of recent repair jobs was selected and estimated cost and actual cost were recorded.

Calculate the value of spearman’s correlation coefficient.

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.

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. 

In a partially destroyed laboratory record of an analysis of regression data, the following data are legible : 

Variable of X = 9 

Regression equations : 8x - 10g + 66 = 0 and  40x- 18g = 214

Find Correlation coefficient between X and Y on the basis of the above information.

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.