MATLAB: How can one get parameters of fitlm as an output

MATLAB

I learned how to get t-statistics of fitlm by

https://www.mathworks.com/help/stats/fitlm.html

Now, how can one get F-statistics of fitlm?

mdl.Coefficients.F-statistic

does not seem to work. Thank you.

Best Answer

First, see the documentation for F-Statistic, then see the documentation for anova, specifically tbl.

Related Solutions

MATLAB: How can one get t-stat of fitlm as an output

It is in the top example:

load carsmall
X = [Weight,Horsepower,Acceleration];
mdl = fitlm(X,MPG);
mdl.Coefficients.tStat
ans = 4×1
   12.3699
   -5.8023
   -1.7663
   -0.0599
●

MATLAB: How can one get parameters of fitlm as an output? Part 2

avova() returns a table object. You need to access its value like any normal table: https://www.mathworks.com/help/matlab/matlab_prog/access-data-in-a-table.html

For example, consider this code from the documentation page of avova:

load hospital
tbl = table(hospital.Age,hospital.Sex,hospital.BloodPressure(:,2), ...
    'VariableNames',{'Age','Sex','BloodPressure'});
tbl.Sex = categorical(tbl.Sex);
mdl = fitlm(tbl,'BloodPressure ~ Sex + Age^2')
tbl = anova(mdl)

Result

>> tbl
tbl =
  4×5 table
             SumSq     DF    MeanSq       F        pValue 
             ______    __    ______    _______    ________
    Age      18.705     1    18.705    0.40055     0.52831
    Sex      222.09     1    222.09     4.7558    0.031643
    Age^2    30.934     1    30.934    0.66242     0.41772
    Error    4483.1    96    46.699

You can access values like this

>> tbl.pValue(4)
ans =
    0.5000
>> tbl{1,1}
ans =
   18.7052
>> tbl{3,2}
ans =
     1
>> tbl{2,5}
ans =
    0.0316

>> tbl.SumSq(1)
ans =
   18.7052
>> tbl.DF(3)
ans =
     1
>> tbl.pValue(2)
ans =
    0.0316

Best Answer

Related Solutions

MATLAB: How can one get t-stat of fitlm as an output

MATLAB: How can one get parameters of fitlm as an output? Part 2

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