Hypothesis testing Flashcards
understand what hypothesis testing is
1
Q
What do we assume when carrying out a statistical test?
A
Independence of data within and between groups
2
Q
What is the term given to the violation of independence of data?
A
Pseudo-Replication (is evil!)
3
Q
What are the two types of Hypothesises?
A
- Null hypothesis (the one we assume less likely to be true)
- Alternative hypothesis (the one we assume more likely to be true)
4
Q
What are some of the ways we can reject Ho?
A
- P-values smaller than the alpha level the test is conducted at
- Large T-test values
5
Q
What is a type 1 error?
A
rejecting Ho when it is in fact true
6
Q
What is a type 2 error?
A
Not rejecting Ho when it should be rejected
7
Q
What is the Bonferroni correction and how is it done?
A
The Bonferroni correction is used when using multiple testing methods
- we divide the alpha level by the number of comparisons of groups (k)
8
Q
Describe the 7 step process of hypothesis testing
A
- State Ho and H1
- Chose a statistical test
- Select an alpha level to test at
- Complete a sampling distribution
- Find the P-value
- Decide to reject Ho or not
- Interpret the decision in the context of the data
