Referring to the previous exercises, the other three lakes have larger harvests that show steep increases over time:

Here are values of (O ˆ’ E)²/E, the contribution to chi-square, for each cell.

Based on these values, is it reasonable to regard the time trend for these three lakes as essentially the same?

Transcribed Image Text:

2005 2010 Total OBS 2000 Marian 170 30 50 90 Hatchineha 36 135 242 71 66 225 128 Blue Cypress 31 Total 97 353 637 187 (0 - E /E 2005 Total 2000 2010 Marian 0.84 0.65 0.00 0.19 Hatchineha 0.02 0.01 0.03 0.00 0.09 Blue Cypress Total 0.31 0.00 0.40 0.98 0.00 1.27 0.29