Unit 4: on 31 of 31 papers, 3–18 marks a paper (10 on average)
Read question by question: blind checks found 112 of 120 question parts tagged with the right topic (95% confidence interval 87.4–96.6%). “needs (a)” names an earlier part the listed parts build on, so a question can be worked through whole.
Unit 4 · June 2021 · Q1 · 1 mark, Q2 · 1 mark, Q15 (a, b) · 5 marks, Q20 (b(iv), c) · 5 marks · needs (b(i), b(ii), b(iii)) — question paper and mark scheme
Unit 4 · January 2021 · Q1 · 1 mark, Q2 · 1 mark, Q5 · 1 mark, Q6 · 1 mark, Q20 (a) · 5 marks — question paper and mark scheme
Unit 4 · October 2020 · Q6 · 1 mark, Q19 (a(i), a(ii), a(iii), a(iv), a(v)) · 13 marks — question paper and mark scheme
Unit 4 · October 2020 · Q3 · 1 mark, Q16 (a(i), a(ii), b(i), b(ii)) · 8 marks — question paper and mark scheme
Unit 4 · January 2020 · Q7 · 1 mark, Q19 (a(i), a(ii), a(iii)) · 10 marks — question paper and mark scheme
Unit 4 · October 2019 · Q3 · 1 mark, Q4 · 1 mark, Q5 · 1 mark, Q16 (a(i), a(ii), a(iii), a(iv), b(i), b(ii)) · 13 marks — question paper and mark scheme
Unit 4 · June 2019 · Q5 · 1 mark, Q12 · 1 mark, Q24 (a(ii), a(iii), a(iv)) · 5 marks · needs (a(i)), Q25 (a(iii)) · 2 marks — question paper and mark scheme
Unit 4 · January 2019 · Q4 · 1 mark, Q21 (a(ii), a(iii), a(iv), a(v), b(ii)) · 11 marks · needs (a(i)), Q24 (a(ii)) · 2 marks · needs (a(i)) — question paper and mark scheme
Unit 4 · October 2018 · Q4 · 1 mark, Q5 · 1 mark, Q6 · 1 mark, Q7 · 1 mark, Q21 (a, b, c, d, e) · 11 marks — question paper and mark scheme
Unit 4 · June 2018 · Q14 (a(i), a(ii), b(i), b(iii), b(iv), c(i), c(ii), d, e) · 18 marks · needs (b(ii)) — question paper and mark scheme