Hypothesis & Sampling

Question 1

Define a directional hypothesis

Answer 1

Indicates a direction in the prediction, e.g. ‘ students with pets perform better than students without pets’

Question 2

Define a non-directional hypothesis

Answer 2

Doesn’t indicate a direction, e.g. ‘owning pets will affect students’ exam results

Question 3

Describe the Null Hypothesis

Answer 3

States that there is no relationship between the two variables being studied. There will be no changes in the DV due to change in the IV.
Results are due to chance

Question 4

Describe Opportunity sampling:

Answer 4

uses people who are available at the time the study is carried out

Question 5

Describe random sampling:

Answer 5

When every person in the target population has an equal chance of being selected

Question 6

Describe systematic sampling

Answer 6

when a system is used to select participants

Question 7

Describe stratified sampling:

Answer 7

when you identify the subgroups and select participants in proportion with their occurrences