Edexcel IAL · Mathematics · WST02 · A Level

WST02 Continuous random variables Topic Questions

Every WST02 Continuous random variables topic question from the 2014–current syllabus, drawn from 36 papers (2014–2026) and grouped by syllabus point. Each row opens a page listing the exact question numbers, marks and a direct link into the paper. These are questions by topic, not full papers, so you can revise one topic at a time.

WST02 5 subtopics 316 topic questions 36 papers 912 tagged marks

Back to Continuous random variables All paper codes

Core finding

2.2 The probability density function and the cumulative distribution… is the most frequently assessed subtopic in Continuous random variables, with 187 topic questions and 547 marks across 36 papers. 2.4 Mean and variance of continuous random variables. follows with 77 topic questions and 281 marks. The topic contains 5 subtopics, 316 topic questions and 912 marks in total. Rows count only the parts tagged to that subtopic, keep the same colour in both charts and repeat paper count, tagged marks and year range in the native table.

Topic question count and mark distribution

Subtopics are on the vertical axis and sorted from highest to lowest. Only the parts whose knowledge graph matches a subtopic are counted for it, and percentages are each row's share of the tagged total in that chart. A part tagged to several subtopics is counted in each bar, so the bars are not a partition of the topic total.

Questions by subtopic

question items

2.2 The probability density function and the cumulative distribution function for a continuous random variable. 36 papers

18745.8%

2.4 Mean and variance of continuous random variables. 35 papers

7718.9%

2.5 Mode, median and quartiles of continuous random variables. 34 papers

7317.9%

2.3 Relationship between density and distribution functions. 36 papers

5714.0%

2.1 The concept of a continuous random variable. 11 papers

143.4%

Marks by subtopic

marks

2.2 The probability density function and the cumulative distribution function for a continuous random variable. 36 papers

54743.8%

2.4 Mean and variance of continuous random variables. 35 papers

28122.5%

2.3 Relationship between density and distribution functions. 36 papers

21317.1%

2.5 Mode, median and quartiles of continuous random variables. 34 papers

18014.4%

2.1 The concept of a continuous random variable. 11 papers

272.2%

Subtopic comparison matrix

Curriculum order is by syllabus number, then alphabetically. Every row links to the matching past-paper question list.

Subtopic	Topic questions	Papers	Marks	Years
2.1 The concept of a continuous random variable.	14	11	27	2015–2026	Open topic questions
2.2 The probability density function and the cumulative distribution function for a continuous random variable.	187	36	547	2014–2026	Open topic questions
2.3 Relationship between density and distribution functions.	57	36	213	2014–2026	Open topic questions
2.4 Mean and variance of continuous random variables.	77	35	281	2014–2026	Open topic questions
2.5 Mode, median and quartiles of continuous random variables.	73	34	180	2014–2026	Open topic questions

Browse every topic question

2.1 The concept of a continuous random variable. 14 question items · 11 papers 27 marks · 2015–2026 2.2 The probability density function and the cumulative distribution function for a continuous random variable. 187 question items · 36 papers 547 marks · 2014–2026 2.3 Relationship between density and distribution functions. 57 question items · 36 papers 213 marks · 2014–2026 2.4 Mean and variance of continuous random variables. 77 question items · 35 papers 281 marks · 2014–2026 2.5 Mode, median and quartiles of continuous random variables. 73 question items · 34 papers 180 marks · 2014–2026

Topic question rules and edge cases

How many subtopics does Continuous random variables contain?: This page lists 5 subtopics tagged to the current syllabus. They are ordered by syllabus number, then alphabetically, and each row opens a page of matching past-paper questions.
How are the subtopic question and mark totals calculated?: A multiple-choice question contributes one item and its marks to every subtopic it is tagged with. A structured question contributes one item per tagged part, and that part’s marks; untagged parts of the same question are not counted here. A part tagged to several subtopics therefore appears under each of them.
Why do some subtopics have no numbered prefix?: Practical-skills statements and some syllabus bullets are unnumbered. Numbered statements come first; unnumbered statements and ties are sorted alphabetically.
Is the LaTeX rendered without JavaScript?: Yes. Subtopics that contain formulas are converted to static KaTeX HTML during the build, and the KaTeX stylesheet is served from the same site.