# Topic Questions: • use the fact that if $X\sim\mathrm{Po}(\lambda)$ then the mean and variance of $X$ are each equal to $\lambda$ — 9709 P6 The Poisson distribution

> 4 9709 P6 The Poisson distribution topic questions (9 marks) on use the fact that if … then the mean and variance… — 4 papers, 2020–2023. Open the exact…

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CIE IAL · Mathematics · 9709 P6 · The Poisson distribution

4 9709 P6 The Poisson distribution topic questions are tagged to this syllabus point across 4 papers (2020–2023). Only the parts whose knowledge graph matches this syllabus statement are counted, and the table shows which parts of each question are involved.

- 4 topic questions
- 4 papers
- 9 tagged marks
- 1.9% of topic questions
- 1.6% of topic marks
- 2020–2023
- Syllabus 2020–2027
- [All 9709 P6 The Poisson distribution topic questions](https://www.examsci.com/topics/cie-ial/mathematics/9709-p6/the-poisson-distribution/)
- [All paper codes](https://www.examsci.com/topics/)

Core finding

**This The Poisson distribution syllabus point appears in 4 9709 P6 papers across 2020–2023, contributing 4 topic questions and 9 marks.** The most recent appearance is 9709/62 May/June 2023. That equals 1.9% of the 207 topic questions and 1.6% of the 574 marks tagged to The Poisson distribution. Only parts tagged to this subtopic are counted, so a four-part question can contribute one item and one part's marks. The table lists every matching question, its tagged parts and marks, with a link back to the paper page. Sessions are newest first, so the statement can be traced back through the full paper history.

## Topic questions by session

Newest sessions first. Parts and marks count only the parts tagged to this subtopic; “x of y parts” shows how much of the question is tagged elsewhere. Select the paper cell to open the matching question on the paper page, or use **Go to Practice Hub** to answer that exact question in the Interactive Practice Hub.

| Paper | Question | Type | Parts | Marks | Difficulty | Practice |
| --- | --- | --- | --- | --- | --- | --- |
| [**9709/62** May/June 2023 · CIE IAL](https://www.examsci.com/past-papers/cie-ial/mathematics/9709-p6/2023-may-june-9709-62/#q-2) | **Q2** Poisson Approximation to Binomial Distribution - CIE 9709 Jun 2023 Paper 62 Q2 | FRQ | 1 of 3 parts ((a)) | 1 of 5 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=bf59edf7-7e34-448e-93f7-4eae7e3c7614&question_id=3374de75-76ad-4c76-a374-fff3ae2e6f33&source_detail=9709%2F62+May%2FJune+2023) |
| [**9709/63** May/June 2023 · CIE IAL](https://www.examsci.com/past-papers/cie-ial/mathematics/9709-p6/2023-may-june-9709-63/#q-6) | **Q6** Poisson Approximation to Binomial Distribution - CIE 9709 S23 Paper 63 Q6 | FRQ | 1 of 2 parts ((b)) | 2 of 5 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=7c997abc-3f3f-417d-b55f-135f68c8fc81&question_id=64438843-5ff4-45ae-b9df-76b4b9996206&source_detail=9709%2F63+May%2FJune+2023) |
| [**9709/61** May/June 2022 · CIE IAL](https://www.examsci.com/past-papers/cie-ial/mathematics/9709-p6/2022-may-june-9709-61/#q-4) | **Q4** Poisson and Binomial Variables - CIE Statistics Q4 | FRQ | 1 of 2 parts ((a)) | 5 of 8 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=d0ed09b6-1fa5-4462-8517-425c8c9ca93a&question_id=f05f2b66-32fb-49ea-a458-28c84adefdf2&source_detail=9709%2F61+May%2FJune+2022) |
| [**9709/61** October/November 2020 · CIE IAL](https://www.examsci.com/past-papers/cie-ial/mathematics/9709-p6/2020-october-november-9709-61/#q-5) | **Q5** Worker Absences Poisson Hypothesis Testing - CIE 9709 Nov 2020 Paper 61 Q5 | FRQ | 1 of 5 parts ((a)) | 1 of 13 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=93f29798-f845-4cf9-b116-efd0f6ef4f7c&question_id=729e7cf1-4c36-4c44-811c-3b732ab28d4f&source_detail=9709%2F61+October%2FNovember+2020) |

## Related topic questions in The Poisson distribution

- [• understand the relevance of the Poisson distribution to the distribution of random events, and use the Poisson distribution as a model](https://www.examsci.com/topics/cie-ial/mathematics/9709-p6/the-poisson-distribution/understand-the-relevance-of-the-poisson-distribution-to-the-distribution-of-random/) — 22 question items · 18 papers — 46 marks · 2020–2026
- [• use formulae to calculate probabilities for the distribution $\mathrm{Po}(\lambda)$](https://www.examsci.com/topics/cie-ial/mathematics/9709-p6/the-poisson-distribution/use-formulae-to-calculate-probabilities-for-the-distribution-mathrm-po-lambda/) — 94 question items · 40 papers — 260 marks · 2020–2026
- [• use the normal distribution, with continuity correction, as an approximation to the Poisson distribution where appropriate](https://www.examsci.com/topics/cie-ial/mathematics/9709-p6/the-poisson-distribution/use-the-normal-distribution-with-continuity-correction-as-an-approximation-to-the/) — 39 question items · 33 papers — 151 marks · 2020–2026
- [• use the Poisson distribution as an approximation to the binomial distribution where appropriate](https://www.examsci.com/topics/cie-ial/mathematics/9709-p6/the-poisson-distribution/use-the-poisson-distribution-as-an-approximation-to-the-binomial-distribution-where/) — 38 question items · 22 papers — 95 marks · 2020–2026

## Topic question rules and edge cases

**How many topic questions cover this syllabus point?**

4 question stems cover this subtopic across 4 papers, but only 4 tagged parts and 9 marks belong to it. Other parts of the same questions are assessed under different statements and are excluded from this page.

**Which papers include this subtopic?**

The table lists every matching session from 2020–2023. Each row links to the question anchor on the paper page, where the full paper context and practice entry point are available.

**Why can one question appear under several subtopics?**

The parts of one question can assess different syllabus statements. Each part is counted under its own subtopics, so the same question stem can appear on several subtopic pages while each page lists only the parts and marks tagged to that statement.

**Can I practise these questions with AI marking?**

Yes. Open a paper from the table and use the Interactive Practice Hub entry point. The page itself is static HTML so search engines and retrieval agents can read the full question list without executing JavaScript.

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