Calculate Mean of vector in more decimals

I want to calculate the mean of a vector in more than 4 decimals. The code

A = [0,1,9];
mean(A)

ans = 3.3333

gives

ans = 3.3333

But I want 3.333333

Answer 1

[Michael]

3.3333 is only the display of the variable 'ans'. The result of the calculation has better accuracy. Type

format long

and you can see the result with all significant decimals.

Answer 2

[Image Analyst]

It is already that.

A = [0,1,9];
format short g
m = mean(A)

m = 
       3.3333

fprintf('Mean with 30 decimal places is %.30f.\n', m);

Mean with 30 decimal places is 3.333333333333333481363069950021.

format long g
m = mean(A)

m = 
          3.33333333333333

See the FAQ: https://matlab.fandom.com/wiki/FAQ#Does_MATLAB_only_calculate_to_4_significant_digits?

and

Why is 0.3-0.2-0.1 not equal to zero