- 10 Marks
QTB – Nov 2014 – L1 – SB – Q5a – Statistics
Calculate the Spearman's rank correlation coefficient between the scores in two subjects and interpret the result.
Question
A business school preparing candidates for professional examinations conducted a mock examination to ascertain the level of preparedness of its candidates in two subjects: Quantitative Techniques in Business (QTB) and Management Information (MI). The table below gives the scores of twelve selected candidates.
| Candidates | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Score in QTB (x) | 35 | 77 | 95 | 28 | 76 | 80 | 90 | 62 | 39 | 65 | 90 | 37 |
| Score in MI (y) | 50 | 82 | 89 | 58 | 65 | 61 | 84 | 59 | 48 | 53 | 80 | 52 |
Required:
i. Calculate the Spearman’s rank correlation coefficient between xx and yy. (9 Marks)
ii. Comment on the result in (i) above. (1 Mark)
Find Related Questions by Tags, levels, etc.
- Tags: Correlation, Mock Examination Scores, Spearman’s Rank
- Level: Level 1
- Topic: Statistics
- Series: NOV 2014
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