June 2025 Pearson Edexcel: GCSE (9–1) Statistics ISTO/2H – Paper 2 – Higher Tier – Merged Question Paper & Mark Scheme

June 2025 Pearson Edexcel: GCSE (9–1) Statistics ISTO/2H – Paper 2 – Higher Tier – Merged Question Paper & Mark Scheme Higher Tier Formulae You must not write on this page. Anything you write on this page will gain NO credit. 2 ■■■■ DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA 1 Elijah has a coin. Elijah says, Answer ALL questions. Write your answers in the spaces provided. You must write down all the stages in your working. “I predict that the probability of flipping a head on this coin is 50%” (a) Name the type of probability that Elijah has given. Peter flips Elijah’s coin 300 times. Here are his results. ........................................................................................................................ (1) Result Frequency Heads 138 Tails 162 Peter says, “The probability of flipping a head on this coin is 46%” (b) Comment on the differences between these two probabilities. ............................................................................................................................. ..................................................................................................................... .................................................................................................................................. ................................................................................................................ ....................................................................................................................................... ........................................................................................................... ............................................................................................................................. ..................................................................................................................... (2) (Total for Question 1 is 3 marks) ■■■■ 3 Turn over DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA Hypothesis • Can body mass and skull shape predict the type of seed and fruit eaten by different mammal species? Data collection • • • Skull measurements will be collected from museums for two adult males and two adult females for each mammal species. The data will be collected for 100 mammals. Any missing data will be sourced from the internet. The size of the seeds and fruits that the 100 mammals eat will be recorded using information collected from existing databases. 2 Elise wants to investigate the relationship between the size of mammals and the size of the fruits and seeds that these mammals eat. This is her plan. Discuss the appropriateness of Elise’s hypothesis and her data collection strategy. ............................................................................................................................. ..................................................................................................................... .................................................................................................................................. ................................................................................................................ ....................................................................................................................................... ........................................................................................................... ............................................................................................................................................ 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................................................................................................. 4 ■■■■ DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA ............................................................................................................................. ..................................................................................................................... ............................................................................................................................. ..................................................................................................................... .................................................................................................................................. ................................................................................................................ 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(Total for Question 2 is 5 marks) ■■■■ 5 Turn over DO NOT WRITE IN THIS AREA DO NOT WRITE IN THI S AREA DO NOT WRITE IN THIS AREA 3 Divyesh is investigating the number of games won by two Los Angeles basketball teams, the Clippers and the Lakers. He collects some data from the NBA website. (a) Complete the sentence with an appropriate statistical word. Divyesh has collected data from the internet and so this is................................... data. The information in the bar chart is used to compare the numbers of games won by the Clippers and the Lakers in four basketball seasons from 2015 to 2019 (1) 60 50 40 Games won 30 20 10 0 2015–16 2016–17 2017–18 2018–19 Season Key: Clippers Lakers (Source: ) Using the information in the bar chart to compare the number of games won by each team over the four years, (b) write down one comparison between the two teams, ............................................................................................................................. ..................................................................................................................... ............................................................................................................................. ........................................................................................................... .......... (1) (c) describe the trend in the number of games won by the Lakers over the four seasons.