A graduate student is conducting a study on the habitat preference of moose. She

ID: 3429370 • Letter: A

Question

A graduate student is conducting a study on the habitat preference of moose. She has collected a total of 305 radio locations on the moose, and for each radio location recorded the habitat types in which the moose was found. The area occuupied by each habitat type is given in the table along with the number of radio locations found in that habitat type. The graduate student would like to know if moose are using the different habitat types in proportion to their availability. Conduct a chi square test.

I've done this multiple times and have 2 different answers. One answer I got was a chi square value of 44.295, and for the second attempt i got a chi square value of 3.52.

If anyone could explain this to me, especially the proportion/finding the expected value part, and tell me if either of my answers are right that would be great!

Thanks in advance.

Data table Habitat type # of radio locations Area Open fields 82 275 Clear cut 61 221 Riparian 91 285 Second growth 41 145 Old growth 30 74

Explanation / Answer

Habitat type

# of radio locations

Area

Area in proportion

Expected locations=

Area in proportion*305

Open fields

275

0.275

83.875

Clear cut

221

0.221

67.405

Riparian

285

0.285

86.925

Second growth

145

0.145

44.225

Old growth

0.074

22.57

Total

305

1000

305

Goodness of Fit Test

observed

expected

O - E

(O - E)