In a t-test with n₁ = 10 and n₂ = 10, the degrees of freedom are

  1. 18
  2. 19
  3. 9
  4. 20
Answer

A) 18

(10 + 10) − 2. AS & A Level Biology · Topic 17 Selection and Evolution · 17.1 Variation

Biology MCQ · More A Level Biology: Selection and evolution MCQs · Practise