Edexcel S3 2012 June — Question 1

Exam BoardEdexcel
ModuleS3 (Statistics 3)
Year2012
SessionJune
TopicHypothesis test of Spearman’s rank correlation coefficien
  1. Interviews for a job are carried out by two managers. Candidates are given a score by each manager and the results for a random sample of 8 candidates are shown in the table below.
Candidate\(A\)\(B\)\(C\)\(D\)\(E\)\(F\)\(G\)\(H\)
Manager \(X\)6256875465151210
Manager \(Y\)5447715049253044
  1. Calculate Spearman's rank correlation coefficient for these data.
  2. Test, at the \(5 \%\) level of significance, whether there is agreement between the rankings awarded by each manager. State your hypotheses clearly. Manager \(Y\) later discovered he had miscopied his score for candidate \(D\) and it should be 54 .
  3. Without carrying out any further calculations, explain how you would calculate Spearman's rank correlation in this case.
This paper (7 questions)
View full paper
Q1 Q2 Q3 Q4 Q5 Q6 Q7