HSW Flashcards
1
Q
Valid conclusions
A
- Large sample size SO representative
- Long study SO can allow…. / see effect of X
- Control used SO comparison can be made.
- Mean & SD SO significant differences can be determined.
2
Q
Limitations:
You can only use the information provided.
A
- Small sample size, not representative;
- Only sampled males, females may respond differently to treatment;
- Only tested on …….. in a lab, in the wild, may obtain different pattern in data;
- Only tested on …….. species, might not be true for all species;
- No STATS test so differences could be due to chance;
- Data is SUBJECTIVE, some people may have lied.*
3
Q
Null hypothesis
A
- [x] will have no effect on [y]
- E.g. Temperature will have no effect on rate of reaction
- There will be no correlation between age and weight
- There will be no difference between the observed and expected ratio of 3:1 brown eyes to blue eyes
