Statistical Testing

Question 1

what is statistical testing?

Answer 1

a way of determining whether a hypothesis should be accepted or rejected by telling us whether differents or relationships btween variables are statstically significant or have occurred by chance

Question 2

proability definition

Answer 2

the likelihood that certain events will occur

Question 3

significance level

Answer 3

level at which we can accept or reject H0

Question 4

what does it mean if a result is significant at 0.05 level?

Answer 4

te relationship/difference being due to chance is alone is less than or equal to 5% so can accept H1 as pretty certain results are true, not due to chance

Question 5

in what 3 situations might a 1% sig. level be used?

Answer 5

1. drug trials
2. where there’s no previous reserach
3. one off studies

Question 6

3 things to know for a sign test, to read the table and obtain a critical value

Answer 6

1. significance level
2. number of participants
3. whether one or two-tailed H

Question 7

3 criteria for a sign test

Answer 7

1. must be looking for a diference not an association or relationship
2. must have used a repeated measures design
3. must have nominal data

Question 8

4 steps of a sign test

Answer 8

1. take B from A for ach P and determine sign
2. count up +’s and -‘s, where number of least ocurring is the S value
3. compare S value to critical value
4. S must be less than or = to to be sig.