Edexcel IAL · Mathematics · WST02 · Continuous random variables
Topic Questions: 2.3 Relationship between density and distribution functions. — WST02 Continuous random variables
57 WST02 Continuous random variables topic questions are tagged to this syllabus point across 36 papers (2014–2026). Only the parts whose knowledge graph matches this syllabus statement are counted, and the table shows which parts of each question are involved.
Core finding
This Continuous random variables syllabus point appears in 36 WST02 papers across 2014–2026, contributing 57 topic questions and 213 marks. The most recent appearance is WST02/01 January 2026. That equals 18.0% of the 316 topic questions and 23.4% of the 912 marks tagged to Continuous random variables. 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 |
|---|---|---|---|---|---|---|
| WST02/01January 2026 · Edexcel IAL | Q2 Continuous Uniform Distribution - Edexcel IAL Statistics S2 Jan 2026 Q2 |
FRQ | 2 of 7 parts ((c), (d)) | 4 of 12 on the paper |
Easy | Go to Practice Hub |
| WST02/02January 2026 · Edexcel IAL | Q3 Continuous Random Variables - Edexcel IAL S2 2026 Jan Q3 |
FRQ | 1 of 3 parts ((b)(i)) | 5 of 11 on the paper |
Medium | Go to Practice Hub |
| WST02/02January 2026 · Edexcel IAL | Q6 Piecewise Continuous Probability Density Function - Edexcel IAL S2 2026 Jan Q6 |
FRQ | 1 of 6 parts ((d)) | 4 of 15 on the paper |
Medium | Go to Practice Hub |
| WST02/01October 2025 · Edexcel IAL | Q4 Continuous Random Variables - Edexcel IAL Statistics S2 October 2025 Q4 |
FRQ | 1 of 4 parts ((d)) | 3 of 9 on the paper |
Easy | Go to Practice Hub |
| WST02/02October 2025 · Edexcel IAL | Q1 Continuous Random Variables - Oct 2025 Q1 |
FRQ | 1 of 3 parts ((c)) | 4 of 10 on the paper |
Medium | Go to Practice Hub |
| WST02/01June 2025 · Edexcel IAL | Q1 Continuous Random Variables - Edexcel IAL S2 Summer 2025 Q1 |
FRQ | 1 of 6 parts ((d)) | 3 of 11 on the paper |
Easy | Go to Practice Hub |
| WST02/01January 2025 · Edexcel IAL | Q3 Continuous Uniform Distribution - Edexcel IAL S2 Jan 2025 Q3 |
FRQ | 1 of 6 parts ((d)) | 4 of 15 on the paper |
Easy | Go to Practice Hub |
| WST02/01October 2024 · Edexcel IAL | Q5 Continuous Random Variables - Edexcel IAL S2 October 2024 Q5 |
FRQ | 3 parts ((a), (b), (c)) | 9 | Easy | Go to Practice Hub |
| WST02/01June 2024 · Edexcel IAL | Q2 Continuous Random Variables - Edexcel IAL S2 June 2024 Q2 |
FRQ | 1 of 3 parts ((c)) | 3 of 9 on the paper |
Medium | Go to Practice Hub |
| WST02/01January 2024 · Edexcel IAL | Q7 Cumulative Distribution Function and Mode/Median - Edexcel IAL S2 Jan 2024 Q7 |
FRQ | 1 of 3 parts ((a)) | 3 of 8 on the paper |
Medium | Go to Practice Hub |
| WST02/01October 2023 · Edexcel IAL | Q6 Continuous Random Variables & Cumulative Distribution Functions - Edexcel IAL S2 October 2023 Q6 |
FRQ | 1 of 3 parts ((c)) | 6 of 12 on the paper |
Medium | Go to Practice Hub |
| WST02/01June 2023 · Edexcel IAL | Q5 Continuous Cumulative Distribution Function - Edexcel IAL S2 2023 Jun Q5 |
FRQ | 1 of 5 parts ((d)) | 1 of 14 on the paper |
Medium | Go to Practice Hub |
| WST02/01January 2023 · Edexcel IAL | Q6 Continuous Random Variables - Edexcel IAL S2 Jan 2023 Q6 |
FRQ | 2 of 5 parts ((b), (c)) | 11 of 18 on the paper |
Easy | Go to Practice Hub |
| WST02/01October 2022 · Edexcel IAL | Q5 Continuous Cumulative Distribution Function - Edexcel IAL S2 October 2022 Q5 |
FRQ | 1 of 3 parts ((a)) | 4 of 9 on the paper |
Medium | Go to Practice Hub |
| WST02/01June 2022 · Edexcel IAL | Q6 Continuous Random Variables - Edexcel IAL S2 2022 Jun Q6 |
FRQ | 1 of 4 parts ((c)) | 6 of 13 on the paper |
Easy | Go to Practice Hub |
| WST02/01January 2022 · Edexcel IAL | Q2 Continuous Uniform Distribution Properties - Edexcel IAL S2 Jan 2022 Q2 |
FRQ | 1 of 4 parts ((a)) | 2 of 8 on the paper |
Easy | Go to Practice Hub |
| WST02/01January 2022 · Edexcel IAL | Q4 Piecewise Continuous Random Variable - Edexcel IAL S2 Jan 2022 Q4 |
FRQ | 1 of 5 parts ((c)) | 7 of 15 on the paper |
Easy | Go to Practice Hub |
| WST02/01October 2021 · Edexcel IAL | Q3 Continuous Random Variables - Edexcel IAL S2 October 2021 Q3 |
FRQ | 2 of 5 parts ((d)(i), (d)(ii)) | 5 of 10 on the paper |
Easy | Go to Practice Hub |
| WST02/01October 2021 · Edexcel IAL | Q6 Continuous Random Variables & Cumulative Distribution Functions - Edexcel IAL S2 October 2021 Q6 |
FRQ | 2 of 6 parts ((c), (d)) | 7 of 17 on the paper |
Medium | Go to Practice Hub |
| WST02/01June 2021 · Edexcel IAL | Q3 Continuous Random Variables - Edexcel IAL S2 2021 Jun Q3 |
FRQ | 1 of 5 parts ((e)) | 4 of 15 on the paper |
Medium | Go to Practice Hub |
| WST02/01June 2021 · Edexcel IAL | Q5 Continuous Uniform and Cumulative Distributions - Edexcel IAL S2 2021 Jun Q5 |
FRQ | 1 of 4 parts ((b)) | 2 of 11 on the paper |
Easy | Go to Practice Hub |
| WST02/01January 2021 · Edexcel IAL | Q2 Continuous Random Variables - Edexcel IAL Statistics S2 Jan 2021 Q2 |
FRQ | 1 of 3 parts ((c)) | 5 of 10 on the paper |
Medium | Go to Practice Hub |
| WST02/01October 2020 · Edexcel IAL | Q2 Continuous Uniform Distribution - Edexcel IAL S2 June 2020 Q2 |
FRQ | 1 of 6 parts ((a)) | 2 of 12 on the paper |
Easy | Go to Practice Hub |
| WST02/01October 2020 · Edexcel IAL | Q5 Continuous Random Variables Integration and CDF - Edexcel IAL S2 June 2020 Q5 |
FRQ | 1 of 4 parts ((b)) | 4 of 13 on the paper |
Medium | Go to Practice Hub |
| WST02/01January 2020 · Edexcel IAL | Q4 Continuous Random Variables - Edexcel IAL S2 January 2020 Q4 |
FRQ | 1 of 5 parts ((d)) | 5 of 15 on the paper |
Medium | Go to Practice Hub |
| WST02/01October 2019 · Edexcel IAL | Q4 Continuous Random Variables - Edexcel IAL S2 October 2019 Q4 |
FRQ | 2 of 4 parts ((b), (c)) | 7 of 14 on the paper |
Medium | Go to Practice Hub |
| WST02/01October 2019 · Edexcel IAL | Q7 Cumulative Distribution Function and Hypothesis Test - Edexcel IAL S2 October 2019 Q7 |
FRQ | 1 of 3 parts ((a)) | 4 of 12 on the paper |
Medium | Go to Practice Hub |
| WST02/01June 2019 · Edexcel IAL | Q7 Piecewise Continuous Random Variable - Edexcel IAL S2 2019 Jun Q7 |
FRQ | 1 of 2 parts ((a)) | 7 of 9 on the paper |
Hard | Go to Practice Hub |
| WST02/01January 2019 · Edexcel IAL | Q3 Continuous Random Variables - Edexcel IAL S2 2019 Jan Q3 |
FRQ | 2 of 3 parts ((a), (b)) | 5 of 8 on the paper |
Medium | Go to Practice Hub |
| WST02/01January 2019 · Edexcel IAL | Q7 Continuous Probability Density Function - Edexcel IAL S2 2019 Jan Q7 |
FRQ | 1 of 5 parts ((c)) | 4 of 14 on the paper |
Medium | Go to Practice Hub |
| WST02/01October 2018 · Edexcel IAL | Q5 Continuous Random Variables - Edexcel IAL S2 Oct 2018 Q5 |
FRQ | 1 of 3 parts ((a)) | 5 of 11 on the paper |
Hard | Go to Practice Hub |
| WST02/01June 2018 · Edexcel IAL | Q6 Continuous Random Variables - Edexcel IAL June 2018 S2 Q6 |
FRQ | 1 of 5 parts ((c)) | 4 of 14 on the paper |
Medium | Go to Practice Hub |
| WST02/01January 2018 · Edexcel IAL | Q1 Continuous Random Variables - Jan 2018 Q1 |
FRQ | 1 of 3 parts ((c)) | 4 of 9 on the paper |
Medium | Go to Practice Hub |
| WST02/01January 2018 · Edexcel IAL | Q7 Continuous Random Variables & Functions - Jan 2018 Q7 |
FRQ | 1 of 6 parts ((e)) | 3 of 15 on the paper |
Medium | Go to Practice Hub |
| WST02/01October 2017 · Edexcel IAL | Q5 Cumulative Distribution Function - Edexcel IAL S2 October 2017 Q5 |
FRQ | 2 parts ((a), (b)) | 10 | Hard | Go to Practice Hub |
| WST02/01June 2017 · Edexcel IAL | Q3 Continuous Random Variables - Edexcel IAL S2 June 2017 Q3 |
FRQ | 1 of 3 parts ((c)) | 5 of 12 on the paper |
Easy | Go to Practice Hub |
| WST02/01June 2017 · Edexcel IAL | Q5 Continuous Random Variables - Edexcel IAL S2 June 2017 Q5 |
FRQ | 1 of 4 parts ((d)) | 4 of 11 on the paper |
Medium | Go to Practice Hub |
| WST02/01January 2017 · Edexcel IAL | Q7 Continuous Random Variables - Edexcel IAL S2 Jan 2017 Q7 |
FRQ | 1 of 6 parts ((d)) | 4 of 14 on the paper |
Easy | Go to Practice Hub |
| WST02/01October 2016 · Edexcel IAL | Q2 Continuous Random Variables - Edexcel IAL S2 October 2016 Q2 |
FRQ | 1 of 6 parts ((b)) | 2 of 14 on the paper |
Easy | Go to Practice Hub |
| WST02/01June 2016 · Edexcel IAL | Q4 Continuous Uniform Distribution - Edexcel S2 2016 Jun Q4 |
FRQ | 1 of 6 parts ((d)) | 3 of 13 on the paper |
Easy | Go to Practice Hub |
| WST02/01June 2016 · Edexcel IAL | Q6 Continuous Random Variable PDF Properties - Edexcel S2 2016 Jun Q6 |
FRQ | 1 of 4 parts ((c)) | 2 of 11 on the paper |
Medium | Go to Practice Hub |
| WST02/01January 2016 · Edexcel IAL | Q6 Continuous Random Variables Integration and Skewness - Edexcel IAL S2 Jan 2016 Q6 |
FRQ | 1 of 5 parts ((c)) | 3 of 15 on the paper |
Medium | Go to Practice Hub |
| WST02/01June 2015 · Edexcel IAL | Q1 Continuous Random Variables - Edexcel IAL S2 2015 Jun Q1 |
FRQ | 2 of 3 parts ((a), (c)) | 6 of 10 on the paper |
Medium | Go to Practice Hub |
| WST02/01January 2015 · Edexcel IAL | Q2 Continuous random variables and expectation - Edexcel IAL Statistics S2 Jan 2015 Q2 |
FRQ | 1 of 6 parts ((c)) | 2 of 11 on the paper |
Easy | Go to Practice Hub |
| WST02/01June 2014 · Edexcel IAL | Q6 Continuous Random Variables - CDF and PDF properties - Edexcel IAL S2 June 2014 Q6 |
FRQ | 1 of 4 parts ((b)) | 3 of 10 on the paper |
Easy | Go to Practice Hub |
| WST02/01January 2014 · Edexcel IAL | Q3 Continuous Random Variables - Edexcel IAL S2 Jan 2014 Q3 |
FRQ | 1 of 2 parts ((b)) | 8 of 11 on the paper |
Medium | Go to Practice Hub |
| WST02/01January 2014 · Edexcel IAL | Q6 Continuous Probability Density Functions - Edexcel IAL S2 Jan 2014 Q6 |
FRQ | 1 of 4 parts ((c)) | 5 of 15 on the paper |
Medium | Go to Practice Hub |
Related topic questions in Continuous random variables
2.1 The concept of a continuous random variable.
27 marks · 2015–2026
2.2 The probability density function and the cumulative distribution function for a continuous random variable.
547 marks · 2014–2026
2.4 Mean and variance of continuous random variables.
281 marks · 2014–2026
2.5 Mode, median and quartiles of continuous random variables.
180 marks · 2014–2026
Topic question rules and edge cases
- How many topic questions cover this syllabus point?
- 47 question stems cover this subtopic across 36 papers, but only 57 tagged parts and 213 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 2014–2026. 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.