16 Kevin is the Principal of a college.
He wishes to investigate types of transport used by students to travel to college.
There are 3200 students in the college and Kevin decides to survey 60 of them.
Describe how he could obtain a simple random sample of size 60 from the 3200 students.
The table below is an extract from the Large Data Set, showing the purchased quantities of fats and oils for the South East of England in 2014.
| Description | |
| Butter | 42 |
| Soft margarine | 16 |
| Olive oil | 17 |
| Other vegetable and salad oils | 28 |
Kim claims that more olive oil was purchased in the South East than soft margarine.
Explain why Kim may be incorrect.