Homework Progress
8/21 Marks
The table shows the number of families staying at a campsite in 2015.
Questionnaires are sent to 60 families.
The sample of size 60 is stratified by type of unit and area.
Type of unit
Caravan
Tent
Motorhome
Total
Woods
25
15
60
100
Area
Fields
20
30
50
100
Clifftop
35
45
20
100
a) How many families who
stayed in a Tent in the
Woods are sent a
questionnaire?
b) How many families who
stayed in a Caravan
are sent a questionnaire?
