数据调用anovan​函数后，输出都是Na​N，这是则么回事。

Y=[144,39,24.2,0;215,47,31.1,1;138,45,22.6,0;145,47,24.0,1;162,65,25.9,1;142,46,25.1,0;...

170,67,29.5,1;124,42,19.7,0;158,67,27.2,1;154,56,19.3,0;162,64,28.0,1;150,56,25.8,0;...

140,59,27.3,0;110,34,20.1,0;128,42,21.7,0;130,48,22.2,1;135,45,27.4,0;114,18,18.8,0;...

116,20,22.6,0;124,19,21.5,0;136,36,25.0,0;142,50,26.2,1;120,39,23.5,0;120,21,20.3,0;...

160,44,27.1,1;158,53,28.6,1;144,63,28.3,0;130,29,22,1;125,25,25.3,0;175,69,27.4,0];

y=Y(:,1);

a=Y(:,2);

b=Y(:,3);

c=Y(:,4);

varnames={'a','b','c'};

[p,table]=anovan(y,{a,b,c},'model','full','varnames',varnames)

结果

p =

NaN

NaN

NaN

NaN

NaN

NaN

NaN

table =

'Source' 'Sum Sq.' 'd.f.' 'Singular?' 'Mean Sq.' 'F' 'Prob>F'

'a' [ 0] [ 0] [ 1] [ 0] [NaN] [ NaN]

'b' [ 0] [ 0] [ 1] [ 0] [NaN] [ NaN]

'c' [ 0] [ 0] [ 1] [ 0] [NaN] [ NaN]

'a*b' [ 0] [ 0] [ 1] [ 0] [NaN] [ NaN]

'a*c' [ 0] [ 0] [ 1] [ 0] [NaN] [ NaN]

'b*c' [ 0] [ 0] [ 1] [ 0] [NaN] [ NaN]

'a*b*c' [ 0] [ 0] [ 1] [ 0] [NaN] [ NaN]

'Error' [-5.457e-12] [ 0] [ 0] [ 0] [] []

'Total' [ 14037] [ 29] [ 0] [] [] []

Answer 1

[埃博拉酱]

你可能需要为anovan设置continuous参数，因为你的a和b似乎是连续变量，而anovan默认将所有变量当作分类变量处理。