12 3 A student collected fieldwork data on how environmental quality varied with distance from a flagship regeneration scheme in the centre of Birmingham. Study Figure 3 below, which shows a partly completed Spearman‘s rank correlation coefficient test. (a) (i) Complete the statistical test by filling in the table below. (2) Distance from flagship regeneration (metres) Rank distance Environmental Quality Score Rank Environmental Quality Difference between ranks (d) d² 50 1 +4 2 1 1 100 2 +5 1 1 1 150 3 +3 3 0 0 200 4 -1 8 4 16 250 5 +2 4.5 0.5 0.25 300 6 +2 4.5 1.5 2.25 350 7 0 7 0 0 400 8 1 6 450 9 -2 9 0 0 500 10 -4 10 0 0 ∑d² = Figure 3 (ii) The student determined that there was a strong negative correlation between environmental quality score and distance from the flagship regeneration scheme. Explain what is meant by a negative correlation. (1) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... Turn over 13 (iii) Give two possible reasons for the relationship between environmental quality and distance from the flagship regeneration scheme. 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(b) Explain one advantage and one disadvantage of using oral accounts in fieldwork. 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Assess how the sampling procedures and sample size affected your conclusions. . 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(Total for Question 3 = 18 marks) Turn over 15 BLANK PAGE