Mathematics · Oct / Nov 2022 · Paper 41 · Question 5

9.4 [1]

2.4 [2]

B1 for [uq =] 10.4 or [lq =] 8 but not as final answer

18 [2]

B1 for 82 seen

13 34.65 or 34 20 [4]

M1 for midpoints 10, 25, 32.5, 40, 52.5 soi

M1 for Σfx where values of x are in interval or on boundary Σfx M1 dep on second M for 150

0.3, 5.7, ..., 7.95, 1.5 [3]

B2 for any two correct

or B1 for one correct or for at least three frequency densities seen 0.2, 3.8, 8, 5.3, 1 oe

or M1 for [factor] 1.5

7 745 oe [2]

M1 for 15 14 × 150 149