AHS 2025 GEOG PRELIM P1 MS

ANGLICAN HIGH SCHOOL SECONDARY 4 PRELIMINARY EXAMINATIONS 2025 GEOGRAPHY Paper 1 MARKING GUIDE FOR TEACHERS 2279/01 22 August 2025 MAXIMUM MARK: 50 This document consists of 11 printed pages. Page 1 of 11

Question Answer Marks 1(a) A group of students were investigating the importance and popularity of wet markets for sustainable living in Singapore. There are currently 83 wet markets managed by the National Environment Agency (NEA) and NEA-appointed operators in Singapore, compared with 691 supermarkets. The students found data on the NEA website showing the decreasing public preference for wet markets and represented the information using a pie chart, as shown in Fig. 1.1. They decided to test the hypothesis: “Wet markets are becoming increasingly irrelevant in meeting the grocery needs of Singapore residents.” Using Fig. 1.1, suggest how the information is useful for this investigation. Possible responses include: • This secondary data provides evidence that points to an overall decreasing trend in the number of Singapore residents visiting the wet market from 2014 to 2018 [1 mark] • Backs the students’ hypothesis for investigation that assumes that wet markets are becoming increasingly irrelevant in meeting the grocery needs of Singapore residents [1 additional mark]. AO2 2 1(b)(i) The students decided to conduct a questionnaire, shown in Fig. 1.2 (Insert), with Singapore residents living in Fengshan GreenVille on a Wednesday afternoon. The questionnaire focused on how residents meet their grocery needs on a weekly basis. They aimed to survey 50 people, and their teacher instructed them to use the stratified random sampling method to conduct the interviews. Explain the advantages of using stratified random sampling method. Award 1 mark for each explanation of the advantages of the use of stratified random sampling method. Award a maximum of 1 additional mark for further development of each explanation, where applicable. Possible responses include: • Stratified random sampling involves using random number generator and respondents would be identified without bias as every subject in the population has an equal chance of being selected [1 mark]. • Students could select their samples by interviewing a proportionate makeup to the population [1 mark] such as based on gender, for e.g. if the proportion of people who source for the groceries are 70% females, students would then survey the proportion of female respondents accordingly [1 additional mark]. • A representation of respondents from different age groups could be surveyed [1 mark]. For example, 18-29 (younger adults), 30-49 (middle-aged adults), 50-65 (seniors) and 66 and above (elderly) to consider the diversity in the 3 Page 2 of 11

population to better represent their take on the importance of wet market/supermarket/online shopping website [1 additional mark]. AO2 Question Answer Marks 1(b)(ii) The students presented the responses gathered for Question 1 of the questionnaire, as shown in Fig. 1.3 (Insert). The figure shows how frequently residents visit wet markets, supermarkets, and online shopping websites on a weekly basis to meet their basic grocery needs. Using the survey results in Fig. 1.3, describe the popularity of wet markets in Singapore. Award 1 mark for each description of evidence backing the popularity or diminishing popularity of the wet market, to a maximum of 4 marks. Award a maximum of 1 additional mark for further development of each description, where applicable. Possible responses include: • Overall, wet markets are generally popular in Singapore [1 mark], as 80% of the 30 respondents visit it regularly on a weekly basis to meet their basic grocery needs [1 additional mark]. OR Only 6 respondents indicated that they do not visit the wet market at all in a week, which is the lowest when compared to 8 for supermarkets and 20 for online shopping website [1 additional mark]. • 8 respondents indicated that they visited wet market 7 or more times a week to meet their grocery needs; the highest compared with only 4 who visited supermarket, and none visited online shopping platform 7 or more times a week [1 mark] • For people who do their grocery shopping at least 3 or more times a week, wet market also stands out to be the most visited in comparison to supermarket and online shopping website [1 mark]; wet market (15), supermarket (13), online shopping website (1) [1 additional mark]. AO2 4 Page 3 of 11

Page 4 of 11 Question Answer Marks 1(b)(iii) Explain how the reliability of the survey results shown in Fig. 1.3 can be improved. Award 1 mark for each explanation of how students can consider the various factors below to improve the survey results. Award a maximum of 1 additional mark for further development of each explanation, where applicable. Possible responses include: Survey over a longer time frame • Conduct the survey over a few days instead of doing it only once on a Wednesday afternoon [1 mark] so that a wider range of respondents with different schedules and routines can be represented to increase reliability [1 additional mark]. Survey Conducted at Different Times/Days • Collect responses on both weekdays and weekends to reduce bias due to time-specific habits or routines [1 mark]. If the survey is only conducted on a weekday or at a fixed time, it might miss responses from certain groups like working adults or students, resulting in sampling bias [1 additional mark]. Account for Availability of Alternatives (e.g. supermarkets) • Respondents who live near more supermarkets may visit wet markets less regardless of distance, so a question on the availability of nearby supermarkets helps determine if low visit frequency is due to convenience rather than relevance [1 mark], improving the reliability of the survey by reducing the misinterpretation of respondents’ shopping behavior [1 additional mark]. AO2 3 Question Answer Marks 1(b)(iv) Study Table 1.1, which shows a further breakdown of the information the students collected through the questionnaire, and Fig. 1.4, which shows a partially completed bar graph representing the questionnaire results by gender, based on data from Table 1.1. 2

Page 5 of 11 Use the information from Table 1.1 to complete the bar graph in Fig. 1.4, showing the number of female respondents who shop for their grocery needs seven or more times a week. Award 1 mark for accurate plot of data on supermarket (female). Award 1 mark for accurate plot of data on online shopping website (female). AO2 Question Answer Marks 1(c) To better capture people’s perceptions of the relevance of wet markets, the students generated a word cloud, as shown in Fig. 1.5 (Insert), based on responses to Question 4 of the