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CAIE A-Level Biology 18.2.5 Spearman’s and Pearson’s Correlation

Practise choosing Spearman’s rank or Pearson’s linear correlation, calculating a coefficient and comparing it with a critical value to test significance.

Syllabus
2028–2030
Course
Biology 9700
Level
A2

Exam points

  • choose Spearman’s rank or Pearson’s linear test from the variable and data type
  • calculate or interpret r and compare its magnitude with the critical value
  • reject the null hypothesis only when the correlation coefficient is significant

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