Paper 4 Geography - Alternative to Practical

Question 1

Random Sampling

Answer 1

Everyone has equal chance to be selected

Question 2

Systematic Sampling

Answer 2

Observations taken at regular intervals

Eg. choosing every 5th person

Question 3

Stratified Sampling

Answer 3

Dividing sampling into groups.

Eg choosing people by grouping them in their age groups, and then picking within each group.

Question 4

Random Sampling Pros and Cons

Answer 4

Pros:
Removes bias
People are selected quickly

Cons:
May be weighted, or unbalanced.
Difficult and takes longer to organise

Question 5

Systematic Sampling Pros and Cons

Answer 5

Pros:
Simple + Quick
No bias
Evenly-distributed samples

Cons:
Predictable patterns
Success relies on population count
Unequal selection is possible

Question 6

Stratified Sampling Pros and Cons

Answer 6

Pros:
Precise (?)
Reduced costs

Cons:
Difficulty analyzing the results (?)