Spearman's rank Flashcards
1
Q
tests for
A
strength of a link between 2 data sets
2
Q
null hypothesis
A
there is no relationship between pedestrian density and shopping quality
3
Q
alternative hypothesis
A
there is a relationship between pedestrian density and shopping quality
4
Q
method
A
- generate hypotheses
- rank each variable
- calculate difference in ranking for each site
- check coefficient for significance (degrees of freedom)
- reject or accept null hypothesis
5
Q
required sample size
A
large or degrees of freedom will be too small
6
Q
advantages
A
- confirms strength and direction of a relationship
- provides a level of confidence
7
Q
disadvantages
A
- only indicates that they are associated, not why
- if variables are ranked differently the results are non sensical
8
Q
findings at sabden
A
rejected as not 95% sure
possibly due to human error