Inferential Testing

Question 1

Type 1 error

Answer 1

False positive
Accepting hypothesis in error when it should have been rejected
Usually occurs when the significance level is too lenient (10%)

Question 2

Type 2 error

Answer 2

False negative
Accepting a null hypothesis when it should have been rejected
Usually occurs if the significant level is to stringent (e.g. 1%)

Question 3

Probability

Answer 3

Probability results occurred by chance

General level of 0.05 (5% chance)

Question 4

Significance

Answer 4

If results show there’s a less than 5% chance, results occurred by chance, results are significant. Showing a significant correlation / difference
Null hypothesis then rejected.

If there was a greater than 5% probability the results were by chance, results are not significant, no significant correlation / difference