PSY1005 - WEEK 3

Question 1

name 2 types of research question

Answer 1

difference between groups, relationship between variables

Question 2

what is difference between groups question

Answer 2

compare scores between 2 groups

Question 3

what is relationship between variables question

Answer 3

see if individual scores on 2 variable is related

Question 4

what is null hypothesis

Answer 4

H0 = state there is no effect

Question 5

what is experimental/alternative hypothesis

Answer 5

H1 = non-directional or directional response

Question 6

define systematic variation

Answer 6

due to effect investigated in research study

Question 7

what is unsystematic/random /error/residual varation

Answer 7

due to reason other than effects investigated

Question 8

what are 3 explanations for variation, what one can be automatically eliminated

Answer 8

1. systematic variation only
2. unsystematic variation only
3. both systematic and unsystematic variation

can eliminate 1 as there is always a form of unsystematic variation

Question 9

what is p value

Answer 9

value of probability, ranges from 0 - 1

Question 10

what is logic for null hypotheses testing

Answer 10

emphasis on falsifiabile = if no evidence for H0 then can conclude support for H1