机器算法验证 - 方差分析和方差分析函数之间的区别 - 吾爱随笔录

Anova(data)和和有什么不一样anova(data)？

> anova(res.full)
Analysis of Variance Table

Response: Sales
                     Df Sum Sq Mean Sq   F value    Pr(>F)    
Promotional.Accounts  1   1070    1070   35.0800 0.0001465 ***
Active.Accounts       1  44337   44337 1453.2067 3.680e-12 ***
Competing.Brands      1  43331   43331 1420.2314 4.124e-12 ***
Potential             1     16      16    0.5146 0.4895772    
Residuals            10    305      31                        
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
> Anova(res.full)
Anova Table (Type II tests)

Response: Sales
                     Sum Sq Df   F value    Pr(>F)    
Promotional.Accounts    275  1    9.0193   0.01327 *  
Active.Accounts       27371  1  897.1238 4.025e-11 ***
Competing.Brands      42877  1 1405.3398 4.346e-12 ***
Potential                16  1    0.5146   0.48958    
Residuals               305 10                        
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’

我不明白为什么在每个表中每个因素的 F 统计量都不同。