Probability statistics and inference Flashcards
(7 cards)
1
Q
What is probability
A
The extent to which an event is likely to occur
2
Q
What is a hypothesis
A
Hypothesis is a prediction concerning the kind of results that are expected
3
Q
What is inferential statistics used for
A
To say that the difference reflects more than just a chance so it can be generalised to the whole population
4
Q
What is the P value
A
This is that the probability that the results appeared by chance
5
Q
What is alpha
A
This is the level at which results are significant
So if p is less than 0.050 it is significant
6
Q
What is type one error
A
This is known as false discovery when data appears to be significant but in fact it isn’t
7
Q
What is Type II error
A
This is a failure to detect a significant affect when there is a real affect in the population
