The essays of 10 candidates were ranked by three examiners as shown in the table.

candidates	A	B	C	D	E	F	G	H	I	J
Examiner I	1st	3rd	6th	2nd	10th	9th	7th	4th	8th	5th
Examiner II	2nd	1st	3rd	9th	7th	4th	8th	10th	5th	6th
Examiner III	3rd	2nd	1st	6th	9th	8th	7th	5th	4th	10th

 

a) Calculate the Spearman's rank correlation coefficient of the ranks assigned by:

(i) Examiners I and lI;

(ii) Examiners I and III

(iii) Examiners II and II.

(b) Using the results in (a), state which two examiners agree most.