Mathematics · Oct / Nov 2020 · Paper 42 · Question 4
0580
As printed in the paper
The question as text
The height, h cm, of each of 120 plants is measured. The cumulative frequency diagram shows this information. 0 0 20 40 60 80 100 120 10 20 30 Height (cm) 40 50 h Cumulative frequency
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4(a)(i)[1]
25 [1]
4(a)(ii)[2]
10 nfww [2]
B1 for [lq =] 22 or [uq =] 32
4(a)(iii)[1]
27 [1]
4(a)(iv)[2]
6 [2]
B1 for 114 written
4(b)(i)[4]
27.9 or 27.91 to 27.92 nfww [4]
M1 for mid-values M1 forfx where x lies within or on boundary of correct interval M1 dep fx ÷ 120 dep on second M1
4(b)(ii)[2]
7.6 [2]
M1 for 18 10 oe or 38 20 oe
or B1 for [multiplier] 4 or ¼
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