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ANOVA - Statistics Project Example

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Summary
In other words, there is no effect of varying times of ischemia on % content of water in the group of kidneys. In symbolic form,
ANOVA uses F distribution (F test…
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ANOVA
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Assignment 3 (Part 3) – Statistical Analysis of Data – ANOVA (One Way Analysis of Variance) A. Research Question: Is there a difference in the % water content between the groups of kidney exposed to varying times of ischemia?
B. Null Hypothesis:
There is no difference in the % water content between the group of kidneys exposed to varying times of ischemia. In other words, there is no effect of varying times of ischemia on % content of water in the group of kidneys. In symbolic form,
H0: µ1 = µ2 = µ3 = µ4 (all the means are equal)
(1-Control, 2-30 min ischemia, 3-60-min ischemia, 4-120 min ischemia)
The alternate hypothesis will be
H1: Not all the means are equal (at least one mean is different)
C. Summary of Results of Statistical Analysis
Table 1: The % Water Content (Data)
Control (no ischemia)
30 min ischemia
60 min ischemia
120 min ischemia
78.5
83.0
81.8
83.5
79.2
81.9
81.1
83.5
78.9
83.0
82.3
81.4
79.7
79.8
79.7
81.5
78.6
79.0
Table 2: Descriptive Statistics
Ischemia
n
Mean (X)
SEM
St. Dev
Minimum
Maximum
Q1
Median
Q3
Control
7
79.09
0.182
0.481
78.5
79.7
78.60
79.0
79.70
30 min
3
82.63
0.367
0.635
81.9
83.0
81.90
83.0
83.00
60 min
5
81.30
0.423
0.946
79.8
82.3
80.45
81.5
82.05
120 min
3
82.80
0.700
1.212
81.4
83.5
81.40
83.5
83.50
Table 3: Analysis of Variance Table
Source SS df MS F η2* FCrit p Significant
Between 43.683 3 14.561 23.39 .83 3.34 Read More
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