| Date | November 2014 | Marks available | 3 | Reference code | 14N.1.sl.TZ0.1 |
| Level | SL only | Paper | 1 | Time zone | TZ0 |
| Command term | Find | Question number | 1 | Adapted from | N/A |
Question
The time, in minutes, that students in a school spend on their homework per day is presented in the following box-and-whisker diagram.
Time, in minutes, students spend on their homework per day
Find
(i) the longest amount of time spent on homework per day;
(ii) the interquartile range.
State the statistical term corresponding to the value of 140 minutes.
Find the percentage of students who spend
(i) between 100 and 140 minutes per day on their homework;
(ii) more than 100 minutes per day on their homework.
Markscheme
(i) 300 (minutes) OR 5 hours (A1)
Note: If answer given in hours, the unit must be seen.
(ii) 220 – 100 (M1)
Notes: Award (M1) for the two quartiles seen.
= 120 (minutes) OR 2 hours (A1) (C3)
Note: If answer given in hours, the unit must be seen.
median (time spent on homework per day) (A1) (C1)
Note: Do not accept middle or medium etc.
(i) 25 (A1)
(ii) 75 (A1) (C2)
