Spearman Rank Correlation Coefficient (AQA A-Level Geography): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does the Spearman rank correlation coefficient measure?
What does the Spearman rank correlation coefficient measure?
Strength & direction of correlation
If two variables show correlation, what does this prove?
If two variables show correlation, what does this prove?
Nothing - correlation isn't causation
What is the key requirement for data used in this test?
What is the key requirement for data used in this test?
It must be capable of being ranked
In the formula, what does 'd' represent?
In the formula, what does 'd' represent?
Difference in ranking between data sets
What is the range of possible Rs values?
What is the range of possible Rs values?
+1.0 to -1.0
When ranking data from highest to lowest, which value receives rank 1?
When ranking data from highest to lowest, which value receives rank 1?
The highest value
How should tied values be handled when ranking?
How should tied values be handled when ranking?
Allocate an average rank to each
What must you do after calculating Rs?
What must you do after calculating Rs?
Test it against critical values
What is the minimum sample size needed for reliable results?
What is the minimum sample size needed for reliable results?
At least 10 sets of paired data
What does a negative Rs value indicate?
What does a negative Rs value indicate?
As one variable rises, the other falls