Sampling variation, Bias And Confounding Flashcards
1
Q
What is the purpose of statistics?
A
To generalise/ infer about the population
2
Q
TRUE OR FALSE: A sample shouldn’t be as representative as possible of the population.
A
False: duh man wake up
3
Q
What is a sampling distribution?
A
The distribution of a static across an infinite number of samples.
4
Q
Can the means of samples vary within sampling distributions?
A
Yes these are called the sample averages.
5
Q
What distribution does the means of the samples approximate to?
A
Normal distribution
6
Q
What is another term for the most common range of values?
A
Confidence intervals
7
Q
Name the different bias’ and their subtypes.
A
Selection bias (Healthy worker effect, allocation bias) Information bias (recall bias, publication bias)
8
Q
What is a confounding variable?
A
Something which is related to both the exposure and outcome, however is not the causal pathway.
