Need statistics help to Analyze these data

Dec 4th, 2015
FratBro23
Category:
Statistics
Price: $20 USD

Question description

This question is in honor of my alma mater, Texas Christian University. Young et al. (2006) studied horned lizard (aka horned frogs) survival at the hands of predators. They measured the length (in mm) of the squamosal horn of living horned lizards and of recently killed horned lizards to see if this structure might affect survival. For each outcome (alive or dead), they obtained data from 10 individuals from three populations. Live individuals were obtained from Lubbock, Austin, and Waco; dead individuals were obtained from Stillwater, Norman, and San Antonio. The lengths of the squamosal horn are given below for each population:

Condition

Population

Horn Length

Condition

Population

Horn Length

Alive

Lubbock

25.2

Dead

Stillwater

21.4

Alive

Lubbock

26.9

Dead

Stillwater

23.9

Alive

Lubbock

26.6

Dead

Stillwater

23.2

Alive

Lubbock

25.6

Dead

Stillwater

22.6

Alive

Lubbock

25.7

Dead

Stillwater

22.5

Alive

Lubbock

25.9

Dead

Stillwater

19.3

Alive

Lubbock

27.3

Dead

Stillwater

23.5

Alive

Lubbock

25.1

Dead

Stillwater

23.4

Alive

Lubbock

30.3

Dead

Stillwater

19

Alive

Lubbock

25.6

Dead

Stillwater

21.7

Alive

Austin

26

Dead

Norman

20.2

Alive

Austin

24.6

Dead

Norman

26.7

Alive

Austin

25.6

Dead

Norman

21.7

Alive

Austin

25.3

Dead

Norman

21

Alive

Austin

23.5

Dead

Norman

23.9

Alive

Austin

24.5

Dead

Norman

24.6

Alive

Austin

23.3

Dead

Norman

21.6

Alive

Austin

26

Dead

Norman

25.3

Alive

Austin

23.9

Dead

Norman

25

Alive

Austin

27.3

Dead

Norman

25.2

Alive

Waco

25.4

Dead

San Antonio

15.2

Alive

Waco

25.5

Dead

San Antonio

22.9

Alive

Waco

21.4

Dead

San Antonio

21.4

Alive

Waco

23.8

Dead

San Antonio

23.9

Alive

Waco

25.5

Dead

San Antonio

17.2

Alive

Waco

19.2

Dead

San Antonio

15.5

Alive

Waco

20.7

Dead

San Antonio

22

Alive

Waco

19.2

Dead

San Antonio

22

Alive

Waco

25.5

Dead

San Antonio

23.1

Alive

Waco

20.5

Dead

San Antonio

20.7

A)  You should analyze these data using one of the following options: two-factor ANOVA; nested ANOVA; repeated-measures ANOVA. Which is the correct option, and why is that the best analysis to use?

B)  Analyze the data using the ANOVA technique you selected for the answer to part A. The data may need to be rearranged in order to do this correctly in either Excel or some of the other online statistics calculators!


Tutor Answer

(Top Tutor) Daniel C.
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School: Purdue University
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