MATLAB: How to find average values of answers

signal processing

%For example, if you write this code for a=1:5; b = 2*a + 1 end the answers are >> b =
     3
b =
     5
b =
     7
b =
     9
b =
    11
I want to calculate the mean values for these answers 
b average = (3 + 5+ 7+ 9+11) / 5 = 7

Best Answer

b=zeros(1,5)
for a=1:5
b(a)=2*a+1;
end
k=mean(b);
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