Reasons for Association 2

Question 1

Sampling error/chance

Answer 1

Part of total estimation error of a parameter caused by the random nature of the sample

Question 2

How to minimise sampling error

Answer 2

Take large sample from study population

Question 3

Confidence interval

Answer 3

Range of potential values of the unknown population parameter (with frequency no less than its confidence level)

Question 4

Significance level

Answer 4

Probability of rejecting null hypothesis when it is true

Question 5

What causes a smaller role of chance in the findings?

Answer 5

Narrower confidence interval

Smaller p value