Spearman's rank correlation coefficient (Edexcel GCSE Statistics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
What is the range of Spearman's rank correlation coefficient?
What is the range of Spearman's rank correlation coefficient?
-1 to +1
What does a Spearman's rs of 0 indicate?
What does a Spearman's rs of 0 indicate?
No correlation
What type of correlation does rs > 0 indicate?
What type of correlation does rs > 0 indicate?
Positive correlation
If rs is close to -1, what does this imply?
If rs is close to -1, what does this imply?
Strong negative correlation
Why can't rs be greater than +1 or less than -1?
Why can't rs be greater than +1 or less than -1?
It is inherently limited in range
What is the main visual tool to estimate correlation easily?
What is the main visual tool to estimate correlation easily?
Scatter diagram
What does a high rs value close to +1 suggest about the data?
What does a high rs value close to +1 suggest about the data?
Strong positive relationship
What does an rs of 0.75 in judges' rankings imply?
What does an rs of 0.75 in judges' rankings imply?
Strong correlation
What is a common mistake when interpreting rs values?
What is a common mistake when interpreting rs values?
Ignoring direction
Why must data be ranked before calculating rs?
Why must data be ranked before calculating rs?
To measure relationships