Pearson's product moment correlation coefficient (AQA GCSE Statistics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does a PMCC value of +0.9 indicate?
What does a PMCC value of +0.9 indicate?
Strong positive correlation
What does a PMCC of 0 suggest?
What does a PMCC of 0 suggest?
No correlation
Which correlation coefficient measures linear relationships?
Which correlation coefficient measures linear relationships?
PMCC
If PMCC is -0.85, what can we infer?
If PMCC is -0.85, what can we infer?
Strong negative correlation
What is a key difference between PMCC and Spearman's?
What is a key difference between PMCC and Spearman's?
PMCC is for linear only
What does a PMCC value of -0.2 indicate?
What does a PMCC value of -0.2 indicate?
Weak negative correlation
What should you assess first in PMCC problems?
What should you assess first in PMCC problems?
Scatter plot pattern
If data points are scattered randomly, PMCC is likely to be?
If data points are scattered randomly, PMCC is likely to be?
Close to 0
What does a PMCC of +0.5 indicate about the correlation strength?
What does a PMCC of +0.5 indicate about the correlation strength?
Moderate positive correlation
Why might PMCC be low for curved data?
Why might PMCC be low for curved data?
It measures linear only