There are 959 data points. Here are a couple as an example. I just need to know what test to use.
ID Age BP * 0 = hypotensive, 1 = normal, 2 = hypertensive
1 | 66 | 0 |
2 | 60 | 1 |
3 | 71 | 2 |
4 | 54 | 1 |
5 | 54 | 0 |
6 | 62 | 2 |
7 | 54 | 1 |
8 | 51 | 2 |
9 | 51 | 0 |
10 | 65 | 1 |
11 | 59 | 2 |
12 | 65 | 1 |
13 | 70 | 0 |
14 | 72 | 2 |
Null hypothesis: The average AGE between the three groups of subjects are the same.
Alternative hypothesis: At least one subject has a different average Age.
One-way ANOVA:
Source | DF | SS | MS | F | P |
Blood pressure | 2 | 32.0 | 16.0 | 0.26 | 0.776 |
Error | 11 | 680.0 | 61.8 | ||
Total | 13 | 712.0 |
S = 7.862 R-Sq = 4.50% R-Sq(adj) = 0.00%
Conclusion: The estimated p-value is 0.776 and more than 0.05 significance level. Hence, retain the null hypothesis and conclude that the average AGE between the three groups of subjects is the same at the 0.05 significance level.
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