plumiIntroduction to probability distributions: Edexcel A‑Level Statistics questions
Every Edexcel A-Level Statistics exam question on B.4 Introduction to probability distributions, 2018–2025, with its mark scheme and examiner’s report.
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All 15 questions on Introduction to probability distributions, as a list
- June 2025, Statistical Inference, Q5 (19 marks): 5 Andy is a manager at an engineering firm that produces components for aeroplanes. Part of his role requires him to monitor the assistant managers. Matt, who h
- June 2024, Data and Probability, Q2 (14 marks): 2 Leona is analysing the total number of goals scored in football matches. She estimated the probability of a certain number of total goals being scored by the
- June 2024, Data and Probability, Q6 (10 marks): 6 (a) Explain the difference between a discrete distribution and a continuous distribution. (2) Erin owns several vans that she uses for her parcel delivery com
- June 2023, Data and Probability, Q4 (15 marks): 4 A video game is being created by a game developer. In the game, zombies are spawned into the game at random (a zombie will appear in the game at random). Zomb
- June 2023, Statistics in Practice, Q1 (10 marks): 1 In a video game you can mine blocks of coal. The yield of a block, when mined, is determined randomly. Mining a block of coal yields different numbers of piec
- June 2022, Statistics in Practice, Q2 (6 marks): 2 Shelly works as a project manager for a clothing design company. She is in charge of a project to produce a new jacket design. A pattern is then made of her d
- November 2021, Data and Probability, Q1 (8 marks): 1 Josh works as a proofreader at a company. He is currently correcting the errors in spelling, punctuation, and grammar in the text of a new novel. He has to ma
- November 2021, Data and Probability, Q2 (9 marks): 2 When a signal is converted from analogue to digital, a small amount of information is lost. This loss is called the quantisation error. The probability densit
- November 2020, AS Paper 1, Q2 (5 marks): 2 An excerpt from an article on driving tests is shown in Figure 3. Driving test passes by age-group Percentage passing test in Great Britain, 2017–18 60 50 40
- June 2019, Data and Probability, Q8 (11 marks): 8 South Western Railway operates the train service that runs from Portsmouth to London Waterloo. A page from the timetable is shown in Figure 10. (Source: South
- June 2019, Statistics in Practice, Q1 (13 marks): 1 A group of eggs in a bird’s nest is called a clutch. The number of eggs in a clutch is called the clutch size. Stéphanie is studying the size of tree swallow
- June 2019, AS Paper 1, Q1 (7 marks): Neelam has been told that a parcel she has ordered will be delivered tomorrow between 8am and 6pm and that she must be at home to sign for it. Neelam believes t
- June 2019, AS Paper 2, Q3 (8 marks): 3 Benford's law is a statistical observation about the first digits of numbers in many real-lite datasets. One such dataset that obeys Benford's law is the set
- June 2018, AS Paper 1, Q2 (6 marks): 2 A geyser is a water spring that regularly ejects hot water and steam up into the air in volcanic regions of the world. Old Faithful is a famous geyser in Yell
- June 2018, AS Paper 2, Q6 (9 marks): 6 Imhotep is investigating the number of insurance claims made by car drivers and motorcycle riders in a given year. He contacts a motorcycle insurance company
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