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Date May Example question Marks available 1 Reference code EXM.1.SL.TZ0.2
Level Standard Level Paper Paper 1 Time zone Time zone 0
Command term State Question number 2 Adapted from N/A

Question

Kayla wants to measure the extent to which two judges in a gymnastics competition are in agreement. Each judge has ranked the seven competitors, as shown in the table, where 1 is the highest ranking and 7 is the lowest.

Calculate Spearman’s rank correlation coefficient for this data.

[5]
a.

State what conclusion Kayla can make from the answer in part (a).

[1]
b.

Markscheme

average equal ranks         M1

     A1A1

r s = 0.817       A2

[5 marks]

a.

There is strong agreement between the two judges.        R1

[1 mark]

b.

Examiners report

[N/A]
a.
[N/A]
b.

Syllabus sections

Topic 4—Statistics and probability » SL 4.10—Spearman’s rank correlation coefficient
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Topic 4—Statistics and probability

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