The expected frequency is the number of times we expect an event in theory. The actual (observed) frequency:

  1. is always exactly equal to it
  2. is usually close to it but not exactly equal
  3. is always larger
  4. is always smaller
Answer

B) is usually close to it but not exactly equal

Chance causes some variation from trial to trial. SLO M-09-C-07 · Understanding

Mathematics MCQ · More Relative and Expected Frequencies MCQs · Practise