Data Analysis

Question 1

What is the level of significance that psychologists accept?

Answer 1

P=0.05 (5%)

0.05 is insignificant, accept null

Question 2

What is nominal data?

Answer 2

Results can be categorised

Question 3

What is ordinal data?

Answer 3

Results can be put in an order

E.g highest to lowest

Question 4

What is interval data?

Answer 4

When there are equal intervals on a measurement scale and an official unit of measurement e.g cm

Question 5

How do you pick an inferential test to use?

Answer 5

What type of data do I have?
Nominal= Chi-squared

Ordinal/Interval: is it an experiment or correlation?
Correlation= Spearman’s Rho

Experiment: what design was used?
Repeated= Wilcoxon
Independent measures= Mann-Whitney U

Question 6

What is probability?

Answer 6

=a numerical measure of chance representing how likely it is that something will happen

0= an event won't happen
1= an event definitely will happen

Question 7

What does p>0.05 mean?

Answer 7

The probability of results being due to chance is less than/ more than/ equal to 5%.

Question 8

What is a type 1 error?

Answer 8

When you accept the alternate and reject the null but later realise it’s a mistake so you have to accept the null

Question 8

What is a type 2 error?

Answer 8

When you accept the null and reject the alternate but later realise it’s a mistake so accept the alternate