IGCSE 0580 Question Bank

Question 13 — IGCSE 0580 May/June 2025 Paper 22

Cambridge IGCSE Mathematics 0580, Extended tier, non-calculator. Topic: Statistics · Frequency density. Worth 11 marks.

StatisticsFrequency density11 marksExtendedNon-calculatorPaper 22May/June 2025
Open in interactive question bank →IGCSE Mathematics 0580 May/June 2025 Paper 22 Question 13 – Statistics, Frequency density, 11 marks

Question text

13 (a) 100 students solve a puzzle. The table shows information about the time taken by each student to solve the puzzle. Time (t seconds) 20 1 t G 40 40 1 t G 60 60 1 t G 100 Frequency 30 40 30 (i) Work out an estimate of the mean. ................................................s [4] (ii) Complete the histogram to show the information in the table. 4 3 Frequency 2 density 1 0 t 20 30 40 50 60 70 80 90 100 Time (seconds) [2] (cid:300)(cid:217)(cid:266)(cid:174)(cid:288)(cid:180)(cid:237)(cid:200)(cid:245)(cid:207)(cid:298)(cid:197)(cid:266)(cid:224)(cid:250)(cid:183)(cid:254)(cid:215) © UCLES 2025 (cid:300)(cid:226)(cid:269)(cid:251)(cid:214)(cid:298)(cid:253)(cid:272)(cid:230)(cid:256)(cid:251)(cid:266)(cid:208)(cid:194)(cid:288)(cid:226)(cid:259)(cid:258) 0580/22/M/J/25 (cid:293)(cid:245)(cid:261)(cid:213)(cid:245)(cid:213)(cid:261)(cid:277)(cid:213)(cid:213)(cid:293)(cid:197)(cid:197)(cid:181)(cid:293)(cid:245)(cid:245)(cid:213) M SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD * 0000800000011 * 11 (cid:44)(cid:1)(cid:1)(cid:1)(cid:1)(cid:9)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:2)(cid:2)(cid:44) (b) 80 adults solve the same puzzle as the students. The cumulative frequency table shows information about the time taken by each adult to solve the puzzle. Time (t seconds) t G 20 t G 40 t G 60 t G 80 t G 100 t G 120 Cumulative frequency 0 12 36 60 74 80 (i) On the grid, draw a cumulative frequency diagram. 80 70 60 50 Cumulative 40 frequency 30 20 10 0 t 20 30 40 50 60 70 80 90 100 110 120 Time (seconds) [3] (ii) Use your cumulative frequency diagram to find an estimate for (a) the median ............................................... s [1] (b) the lower quartile. ............................................... s [1] (cid:300)(cid:219)(cid:266)(cid:174)(cid:288)(cid:180)(cid:237)(cid:200)(cid:245)(cid:207)(cid:298)(cid:197)(cid:266)(cid:224)(cid:252)(cid:183)(cid:254)(cid:215) [Turn over © UCLES 2025 (cid:300)(cid:226)(cid:270)(cid:252)(cid:206)(cid:288)(cid:257)(cid:288)(cid:211)(cid:250)(cid:262)(cid:191)(cid:268)(cid:186)(cid:188)(cid:226)(cid:243)(cid:258) 0580/22/M/J/25 (cid:293)(cid:245)(cid:245)(cid:277)(cid:181)(cid:181)(cid:293)(cid:245)(cid:197)(cid:229)(cid:181)(cid:197)(cid:197)(cid:213)(cid:261)(cid:181)(cid:293)(cid:213) NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD DFD * 0000800000012 * 12 (cid:44)(cid:1)(cid:1)(cid:1)(cid:1)(cid:9)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:2)(cid:3)(cid:44) o NIGRAM DFD

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