Table 4.
The effects of various concentrations of copper oxide nanoparticles on the surface roughness of the polymethyl methacrylate samples according to the results of one-way ANOVA.
|
Concentration (μg/ml) |
Mean (mm) | Std. deviation | Std. error | 95% confidence interval for the mean |
Minimum | P value | |
|---|---|---|---|---|---|---|---|
| Lower bound | Upper bound | ||||||
| 0 | 1.1996 | .28221 | .12621 | .8492 | 1.5500 | .87 | 0.396 |
| 0.5 | .9644 | .27592 | .12339 | .6218 | 1.3070 | .68 | |
| 5 | 1.3718 | .46372 | .20738 | .7960 | 1.9476 | .70 | |
| 50 | .9608 | .19804 | .08857 | .7149 | 1.2067 | .70 | |
| 500 | .9790 | .27031 | .12089 | .6434 | 1.3146 | .73 | |