Question

To study the effect of overfishing in the Indian ocean investigators compared fishing areas in north that had never been overfished (Group 1) with similar areas nearby that had been overfished 1 year earlier (Group 2) and 8 years earlier (Group 3). Assume plots are randomly selected. The variable “Fishes” is the count of fish in an area. Using the data below decide whether the average number of fish differ among areas?

1   22
1   29
1   21
1   19
1   33
1   16
1   20
1   24
1   27
1   28
1   19
2   12
2   12
2   15
2   9
2   20
2   18
2   17
2   14
2   14
2   2
2   17
2   19
3   18
3   4
3   22
3   15
3   18
3   19
3   22
3   12
3   12

Answer 1