Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Data of roughness assessment of titanium alloy samples of five groups (mean, SD, and P values of roughness).
| Groups | N | Mean | SD | Statistic (F) | P value |
|---|---|---|---|---|---|
| Group A | 5 | 39.82 | 5.6419855 | 448.393 | <0.001 |
| Group B | 5 | 164.42 | 5.7846348 | ||
| Group C | 5 | 114.886 | 10.1315586 | ||
| Group D | 5 | 194.84 | 7.5899934 | ||
| Group E | 5 | 58.34 | 4.5665085 | ||
| Total | 25 | 114.4612 | 61.0239609 |
