4.10 Spearman's rank correlation

4.10 Spearman's rank correlation Quiz

IB Maths: Applications and Interpretation HL: Quiz

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  1. 1. Scores 12,15,15,1812,15,15,18 are ranked with rank 11 for the highest. What rank does each 1515 receive?

    • A. 22
    • B. 33
    • C. 2.52.5
    • D. 3.53.5

  2. 2. A scatter diagram shows a curve that is always increasing. Which statement is most likely?

    • A. rsr_s is close to 11 and rr is exactly 11
    • B. rs=1r_s=1 and r<1r<1
    • C. rs=0r_s=0 and r=1r=1
    • D. rs<0r_s<0

  3. 3. A data set has one extreme outlier. Which statement is correct?

    • A. Neither coefficient can be affected
    • B. Pearson's is less sensitive than Spearman's
    • C. Both are equally sensitive
    • D. Spearman's is less sensitive than Pearson's

  4. 4. rs=−0.82r_s=-0.82 for a set of data. What does this indicate?

    • A. A strong negative monotonic association
    • B. A weak positive association
    • C. No association
    • D. A strong positive linear association

  5. 5. Which is true about Pearson's rr and Spearman's rsr_s?

    • A. Pearson's tests for any monotonic relationship
    • B. Spearman's tests only for linearity
    • C. Pearson's tests only for linearity
    • D. rsr_s can be greater than 11

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