The Mathematics IAL S1 — Statistics 1 past papers in the collection that assess probability.
These papers were read question by question, and each question tagged with what it assesses, so the questions on this topic are listed with each paper. Blind checks of 350 randomly chosen question parts (270 from Mechanics M1–M3, 80 from the other units), by readers who had not seen the tags, found 343 tagged with the right topic (95% confidence interval 95.9–99.0%). For the units other than Mechanics, second readers re-read 52 of the 190 papers independently and found 11 tags, of 1,320, that the first reading had missed.
Papers
S1 · June 2025 · Q4 (a, b) · 4 marks, Q6 (b) · 3 marks, Q7 (a, b, c, d, e) · 13 marks — question paper and mark scheme
S1 · January 2025 · Q1 (e, f) · 5 marks, Q3 (a, b(i), b(ii)) · 6 marks, Q4 (a, b, c(i), c(ii)) · 9 marks — question paper and mark scheme
S1 · October 2024 · Q3 (a, b(i), b(ii), c) · 8 marks, Q7 (a, b, d) · 7 marks · needs (c) — question paper and mark scheme
S1 · June 2024 · Q2 (d) · 4 marks, Q5 (c) · 5 marks, Q6 (a, b, c, d(i), d(ii), e) · 13 marks — question paper and mark scheme
S1 · January 2024 · Q1 (d) · 3 marks, Q3 (a, b, c, d) · 8 marks, Q5 (b) · 5 marks, Q6 (a, b, c) · 9 marks — question paper and mark scheme
S1 · October 2023 · Q1 (a, b, c, d, e) · 11 marks, Q3 (i(a), i(b), i(c), ii(a), ii(b), ii(c)) · 12 marks, Q4 (d) · 5 marks — question paper and mark scheme
S1 · June 2023 · Q4 (a, b, c, d) · 9 marks, Q6 (a, b, c) · 9 marks, Q7 (b) · 2 marks — question paper and mark scheme
S1 · January 2023 · Q2 (a, b, c, d) · 10 marks, Q4 (i(a), i(b), ii) · 13 marks, Q5 (e) · 4 marks — question paper and mark scheme
S1 · October 2022 · Q5 (c) · 5 marks, Q6 (a, b, c) · 11 marks, Q7 (a, e, f) · 8 marks — question paper and mark scheme
S1 · June 2022 · Q3 (d) · 2 marks, Q4 (a, b, c) · 11 marks, Q5 (e, f) · 5 marks, Q6 (b, c) · 8 marks — question paper and mark scheme
S1 · January 2022 · Q1 (a, b, c, d, e) · 8 marks, Q3 (d) · 2 marks, Q5 (b, c) · 8 marks, Q7 (a, c) · 10 marks · needs (b) — question paper and mark scheme
S1 · October 2021 · Q1 (a, b, c, d) · 7 marks, Q4 (a, b, c) · 8 marks — question paper and mark scheme
S1 · June 2021 · Q1 (a, b) · 5 marks, Q2 (a, b, c) · 12 marks, Q4 (c, d) · 6 marks — question paper and mark scheme
S1 · January 2021 · Q1 (a, b, c) · 5 marks, Q3 (c, d) · 7 marks, Q6 (a, d) · 6 marks — question paper and mark scheme
S1 · October 2020 · Q2 (a, b, c, d, e) · 13 marks, Q3 (c, d) · 7 marks, Q6 (g) · 2 marks — question paper and mark scheme
S1 · June 2019 · Q3 (a, b, c(i), c(ii)) · 13 marks, Q4 (c, d) · 7 marks, Q5 (d, e) · 6 marks — question paper and mark scheme