# AQA Biology Unit 4 Q4 (C)? JAN 2010

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4 (c) The ecologists analysed the relationship between the number of daffodils in flower in the whole wood and data collected from a nearby weather station for the previous year. They used the Spearman rank correlation test. The table shows their results. The ecologists concluded that a wet, cool summer produces good flowering the following spring. Do you support this conclusion? Use the data in the table to explain your answer. ......................................................................................................................................Month Climatic Factor Correlation coefficient Statistical SignficanceJULY Total Rainfall +0.65 significantAUGUST Total Rainfall +0.74 significantJULY Monthly mean temperature -0.78 significantAUGUST Monthly mean temperature -0.65 significantThis question confuses meow can there be a correlation coefficient for only 2 values? For example in July for Total Rainfall, you would have 1 value for total rainfall and 1 value for the number of daffodils the following year. If you were to plot a graph there would be only 1 point, so how can there be a correlation coefficient (gradient) of some sort?Links to question paper and mark scheme:http://filestore.aqa.org.uk/subjects...W-QP-JAN10.PDF
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