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Question 45

Some students investigated the relationship between altitude and the mean leaf surface area of a subalpine plant species, Ranunculus adoneus.

The table below shows the measurements taken at six different locations:

LocationAltitude (m\text{m}m)Mean leaf surface area (cm2\text{cm}^2cm2)
A34004.2
B32504.8
C31005.5
D29506.8
E28006.2
F26507.4

Using the data in the table, calculate the Spearman's Rank Correlation Coefficient (rsr_srs​) for altitude and mean leaf surface area.

Use the formula: rs=1−6∑d2n(n2−1)r_s = 1 - \frac{6 \sum d^2}{n(n^2 - 1)}rs​=1−n(n2−1)6∑d2​

Give your answer to three decimal places.

[4]

Analysis Questions

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