19M.1.SL.TZ2.T_6
A health inspector analysed the amount of sugar in 500 different snacks prepared in various school cafeterias. The collected data are shown in the following box-and-whisker diagram.
Amount of sugar per snack in grams
State what 13 represents in the given diagram.
Write down the interquartile range for this data.
Write down the approximate number of snacks whose amount of sugar ranges from 18 to 20 grams.
The health inspector visits two school cafeterias. She inspects the same number of meals at each cafeteria. The data is shown in the following box-and-whisker diagrams.
Meals prepared in the school cafeterias are required to have less than 10 grams of sugar.
State, giving a reason, which school cafeteria has more meals that do not meet the requirement.
Markscheme / solution
* This question is from an exam for a previous syllabus, and may contain minor differences in marking or structure.
median (A1) (C1)
[1 mark]
18 − 12 (A1)
Note: Award (M1) for correct quartiles seen.
6 (g) (A1) (C2)
[2 marks]
125 (A1) (C1)
[1 mark]
Cafeteria 2 (A1) (C1)
75 % > 50 % (do not meet the requirement) (R1) (C1)
OR
25 % < 50 % (meet the requirement) (R1) (C1)
Note: Do not award (A1)(R0). Award the (R1) for a correct comparison of percentages for both cafeterias, which may be in words. The percentage values or fractions must be seen. It is possible to award (A0)(R1).
[2 marks]