Summary of main findings

Question 1

hypothesis 1: bed load size decreases with distance from the source

Answer 1

• hypothesis can be accepted
• anomalies at site 4, could be due to human error and rubble in town of Sabden
• supported by Mann Whitney
• bed load size decreased from 14.83 to 6.68

Question 2

hypothesis 2: there is a relationship between hydraulic radius and velocity

Answer 2

• hypothesis can be accepted but weak positive correlation
• site 4 and 6 are anomalies, human error
• depth and width of river increased downstream=hydraulic radius increased=velocity increased
• anomalies due to increase in velocity from tributary (site 6)
• accept null hypothesis due to low degrees of freedom
• spearmans rank

Question 3

conclusion

Answer 3

• downstream changes at Sabden Brook

- accept both hypotheses