You are conducting some behavioral research on the house mouse Mus musculus. Specifically, you want to see how noise affects their ability to complete a task, in this case running through a small maze to reach a reward (an apple slice). You have a group of 20 mice, and you run each of them through a maze under 4 different noise conditions: no noise, low-level noise, moderate-level noise, and high-level noise. You record the time (in seconds) it takes the mouse to reach the apple slice, and obtain these data.
|
Noise Level |
||||
|
Mouse # |
none |
low |
moderate |
high |
|
1 |
46 |
55 |
68 |
44 |
|
2 |
44 |
61 |
72 |
51 |
|
3 |
51 |
59 |
79 |
38 |
|
4 |
34 |
45 |
51 |
37 |
|
5 |
55 |
58 |
45 |
45 |
|
6 |
29 |
64 |
74 |
39 |
|
7 |
34 |
60 |
79 |
46 |
|
8 |
44 |
57 |
66 |
51 |
|
9 |
50 |
61 |
59 |
40 |
|
10 |
41 |
63 |
68 |
50 |
|
11 |
46 |
58 |
72 |
47 |
|
12 |
47 |
55 |
74 |
55 |
|
13 |
38 |
44 |
70 |
46 |
|
14 |
38 |
47 |
61 |
53 |
|
15 |
50 |
20 |
58 |
51 |
|
16 |
46 |
51 |
74 |
42 |
|
17 |
44 |
54 |
78 |
46 |
|
18 |
38 |
48 |
69 |
51 |
|
19 |
40 |
50 |
70 |
47 |
|
20 |
46 |
52 |
66 |
41 |
- Which type of ANOVA should you use to analyze these data, and why should you choose this type of ANOVA?
- Analyze your data, being sure to interpret your results and explain your reasons for declaring them significant or not significant.
- Do your data obey the assumption of normality? Be sure to provide evidence to support your answer! Also, remember that each group must be normally distributed.
