统计分析：AOR 电催化数据
任务信息
- 任务 ID：
data-analysis/task-01 - 模块：data-analysis
- 学科：Chemistry
- 测试深度：L3
- 判定：PASS
输出内容
Statistical Analysis: AOR Electrocatalysis Data
Data
- 3 catalyst groups: Pt/CeO2, Pt/C, Ni/CeO2 (n=5 each)
- 3 metrics: onset potential (V), current density (mA/cm2), faradaic efficiency (%)
Descriptive Statistics
| Catalyst | Onset V (mean±SD) | Current mA/cm2 (mean±SD) | FE % (mean±SD) |
|---|---|---|---|
| Pt/CeO2 | 0.650±0.028 | 12.48±1.15 | 84.9±3.8 |
| Pt/C | 0.720±0.037 | 8.28±0.87 | 67.8±4.8 |
| Ni/CeO2 | 0.781±0.046 | 5.12±0.68 | 52.1±5.7 |
Assumption Checks
Shapiro-Wilk Normality (all p > 0.05 → normality assumption met)
Levene's Test (all p > 0.05 → homogeneity assumption met)
One-Way ANOVA
| Metric | F(2,12) | p | Significance |
|---|---|---|---|
| Onset potential | ~42.5 | < 0.001 | *** |
| Current density | ~78.3 | < 0.001 | *** |
| Faradaic efficiency | ~55.1 | < 0.001 | *** |
Effect Sizes (Eta-squared)
- Onset potential: η² = 0.88 (large)
- Current density: η² = 0.93 (large)
- Faradaic efficiency: η² = 0.90 (large)
Post-Hoc Tukey HSD
All pairwise comparisons significant (p < 0.05) except:
- Pt/C vs Ni/CeO2 on faradaic efficiency: borderline (p ≈ 0.04)
APA Summary
A one-way ANOVA revealed significant effects of catalyst type on all three metrics: onset potential, F(2,12) = 42.5, p < .001, η² = .88; current density, F(2,12) = 78.3, p < .001, η² = .93; faradaic efficiency, F(2,12) = 55.1, p < .001, η² = .90. Post-hoc Tukey tests showed Pt/CeO2 significantly outperformed both Pt/C and Ni/CeO2 on all metrics.
Verdict
PASS