1 Do you think that the density of fish is different between

1. Do you think that the density of fish is different between site D and E? Why or why not?

Solution

The density of fish at the sites D and E are different. This is because, the mean values at sites D and E are 25.4 and 43.6 respectively. The temperature at site D is 20⁰C and at site E is 22⁰C . The salinity at site D is 23 and at site E is 25 respectively. Though the turbidity at both the sites D and E is same, the factors like temperature and salinity affect the density of fish population and therefore, difference in the mean is observed at sites D and E.