quantitative investigations of variation Flashcards
1
Q
how can scientists collect samples randomly
A
- set up a grid
- random number generator to select coordinates
- use a large sample size
- then statistical analysis of data
2
Q
why is it important that scientist collect their samples randomly
A
avoids bias
ensure chance selection of specific group less likely to occur
3
Q
3 stats tests
A
student t test
chi squared
spearman rank correlation
4
Q
A
