MATLAB: Error when computing the mean in Matlab

doubleerrorMATLABmeanstd

I have a double variable called Num_Firm_An with 3 columns and 60000 rows.
Num_Firm_An=[1994 12 19
1994  13  16
1994  16  12
1994  18  27
1994  19  15]
I tried the following two codes:
Code 1:
mean(Num_Firm_An(:,3))
Code 2:
year=1994:2013
for n=1:length(year)
      NFA=Num_Firm_An(Num_Firm_An(:,1)==year(n),:);
      m=mean(NFA(:,3));
      s=std(NFA(:,3));
      NFAmean{n}=m;
      NFAstd{n}=s;
   end
Code one gives the overall mean throughout the years. Code two should provide a final variable with both means and standard deviations for all the years.
Both codes are giving me the follwoing error: Index exceeds matrix dimensions. And I am not being able to solve it. Can someone help me? Thanks

Best Answer

mean([Num_Firm_An{:,3}])
Related Question