本题目来源于试卷: Interaction & Interdependence C.8 Populations & Communities，类别为 IB生物学
[单选题]
A wetland plant called sea-w,d rnosks/98cp 53.f dyhg/wblite.z2sadk-c ,t t, which has narrow succulent leaves, and a tough perenial salt grass both grow on the edge of a salt marsh in Bolsa Chica, California. What statistical test can be used to determine if the two species are found growing together more than would be , -t.2ct kdaszexpected by random chance?
A. Simpson's diversity index
B. T-test
C. Chi-square analysis
D. Frequency found in quadrats
参考答案: C
本题详细解析:
Diversity indices are used to measure the divej:x +)(4fb:njm -j,pgjz mxsjrsity of organisms in an area (Choice A). A t-test (Choice B) is used to see if there is a significant difference between the means of two groups. Chi-square analysis (Choice C) can be used to check for the association of two species after collecting data on the presence or absence of either or both in defined areas. More generally, Chi-square analysis is used to determine if there is a significant difference between observed and expected. Frequency found in quadrats (Choice D) records how frequently one or more species are found in quadrats and (j- mz bgsj mj,fx)j:p:n4x +jis not a statistical test.
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