Probability & Significance

Question 1

Define significance

Answer 1

Statistical term which indicates association or difference between two or more variables is strong enough to accept experimental hypothesis

Question 2

What is the level of significance in psychology?

Answer 2

P = <0.05 (95% sure effect on DV is due to IV)

Question 3

Describe a type I error

Answer 3

• ‘false positive’
• rejecting null hypothesis and wrongly accepting alternative hypothesis (likely when P=0.10)

Question 4

Describe a type II error

Answer 4

• ‘false negative’
• keep null hypothesis and wrongly reject alternative hypothesis (likely when P=0.01)