Mathematics · Oct / Nov 2024 · Paper 42 · Question 5
0580
As printed in the paper
Show the answer and mark scheme
5(a)(i)[3]
1480 [1]
440 [2]
M1 for [UQ =] 1600 soi or [LQ =] 1160 soi
5(a)(ii)[2]
8 80 oe [2]
M1 for 72 or 8 written
5(b)[3]
236 or 235.5 to 235.6 [3]
M2 for 5.104 60 1.3 × oe 5.104
or M1 for their time
5(c)(i)[1]
(160 – 120) × 0.2 [ = 8] [1]
with no errors seen
5(c)(ii)[6]
22, 36, 64, 30 seen (8 × 140 + their22 × 170 + their36 × 190 + their64 × 220 + their30 × 270) ÷ 160 211.75 [12]
B2 B1 for 2 or 3 correct frequencies
or M1 for three of 1.1 × (180 – 160), 1.8 × (200 – 180), 1.6 × (240 – 200) and 0.5 × (300 – 240) oe
M3 M1 for midpoints soi Σ
M1 for fx , x in interval or boundary of interval Σ M1 dep on second
M1 for fx ÷ 160 B1
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