plumiBinomial and normal distributions: Edexcel GCSE Statistics questions
Every Edexcel GCSE Statistics exam question on 3c Binomial and normal distributions, 2019–2025, with its mark scheme and examiner’s report.
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All 13 questions on Binomial and normal distributions, as a list
- June 2025, Paper 2 Higher, Q13 (9 marks): The wingspans of a species of butterfly are normally distributed. The mean length of the wingspans for this species of butterfly is 8.2 cm. Only 2.5% of this sp
- June 2024, Paper 1 Higher, Q9 (8 marks): Peter drops his children off at a breakfast club every Monday morning and every Tuesday morning. He either drops them off on time or late. The probability that
- June 2023, Paper 1 Higher, Q10 (7 marks): A study took place in the southeastern United States to find if there was a relationship between the snout-vent length, in cm, and the body weight, in grams, of
- June 2023, Paper 2 Higher, Q12 (10 marks): A bag contains red counters, blue counters and white counters only. The table shows the proportion of each colour of counter in the bag. Colour Red Blue White 1
- June 2022, Paper 1 Higher, Q12 (7 marks): A game is played with 4 ordinary 6-faced dice. Each dice is to be rolled once and the number of dice that land on a six is recorded. (a) Write down two conditio
- June 2022, Paper 2 Higher, Q11 (13 marks): The mean of the daily winter temperatures and the mean of the daily summer temperatures in the UK have been recorded for each year from 1910 to 2018 This inform
- November 2021, Paper 1 Higher, Q11 (9 marks): A company uses a machine to fill cans with orange juice. For quality assurance, the company takes samples of 4 cans of orange juice at regular intervals in orde
- November 2021, Paper 1 Higher, Q13 (7 marks): Tomi has collected data about the weights, in kg, of cats of a particular breed. The table gives some of the percentiles of his data. Percentile Weight (kg) 97.
- November 2021, Paper 2 Higher, Q12 (7 marks): A company contracts two manufacturers, A and B, to make an item that the company sells. Manufacturer A makes 65% of the items for the company to sell. It is fou
- November 2020, Paper 1 Higher, Q13 (5 marks): Fruitees sweets come in different flavours. There are 8 sweets in a pack of mixed flavours and the flavours for each pack are chosen at random. The mean number
- November 2020, Paper 2 Higher, Q10 (6 marks): Kate is investigating the lengths of earthworms. She wants to find out if the lengths of common earthworms can be modelled by a normal distribution. She has fou
- June 2019, Paper 1 Higher, Q11 (10 marks): Some students at a school walk home and some students go home by bus. The times taken by the students at the school to walk home have a mean of 25 minutes and a
- June 2019, Paper 2 Higher, Q12 (8 marks): Jasper has 3 coins. In an experiment, Jasper flips each of the 3 coins and records the total number of heads that he gets. Jasper believes that each coin is bia
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