Mathematics · Oct / Nov 2025 · Paper 21 · Question 13
0580
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0580/21/O/N/25 © UCLES 2025 [Turn over 13 These are Rahul’s 10 test scores. 9 8 9 10 7 x 9 9 x 7 The mean of these scores is 8. Find the interquartile range. You must show all your working. [4]
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+ 68 2 x = 8 or better 10 x = 6 Lower quartile = 6.5 or 6.75 or 7 or upper quartile = 9 2 or 2.25 or 2.5 nfww [4]
M1 A1 B1 A1
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