Spearman's rank

Question 1

tests for

Answer 1

strength of a link between 2 data sets

Question 2

null hypothesis

Answer 2

there is no relationship between pedestrian density and shopping quality

Question 3

alternative hypothesis

Answer 3

there is a relationship between pedestrian density and shopping quality

Question 4

method

Answer 4

• generate hypotheses
• rank each variable
• calculate difference in ranking for each site
• check coefficient for significance (degrees of freedom)
• reject or accept null hypothesis

Question 5

required sample size

Answer 5

large or degrees of freedom will be too small

Question 6

advantages

Answer 6

• confirms strength and direction of a relationship

- provides a level of confidence

Question 7

disadvantages

Answer 7

• only indicates that they are associated, not why

- if variables are ranked differently the results are non sensical

Question 8

findings at sabden

Answer 8

rejected as not 95% sure

possibly due to human error