Research Methods

Question 1

What is a null and alternative hypothesis

Answer 1

Null - no relationship between variables
Alternative- relationship between variables

Question 2

What is the iv, dv and ev

Answer 2

Iv - variable that is changed
Dv- variable that is measured
Ev- variable that are not controlled but can also affect the experiment

Question 3

What are the types of sampling methods

Answer 3

Random picked form hat , no bias, takes time
Stratified select according to proportion in target pop, most representative, takes time
Opportunity goes into room and pick people ther , no bias, likely to be unrepresentative
Systematic test of names every 5th person , no bias, unrepresentative