Mathematics · May / June 2025 · Paper 22 · Question 13
0580
As printed in the paper
Show the answer and mark scheme
13(a)(i)[4]
53 [4]
M1 for correct midpoints soi
M1 for Σfx where x is in correct interval including boundaries
M1 for Σfx ÷ 100 dep on second M1
13(a)(ii)[2]
Two correct bars with correct widths and heights 2 and 0.75 [2]
B1 for one correct bar
or M1 for 40/20 oe and 30/40 oe soi
13(b)(i)[3]
Correct diagram [3]
B1 for correct horizontal placement for 6 plots
B1 for correct vertical placement for 6 plots B1FT dep on at least
B1 for reasonable increasing curve or polygon through their 6 points If 0 scored,
SC1 for 5 out of 6 points correctly plotted
13(b)(ii)[2]
62 to 64 [1]
FT their increasing curve or polygon reading at 40 46 to 48 [1]
FT their increasing curve or polygon reading at 20
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