Unexpected MATLAB expression.

Hey,

I'm trying to do an unpaired t-test but I'm getting a stupid error. This is my code: For some reason the second numbers in my vectors are causing an error I think it is a small mistake but I can't find it

Someone an idea? Thank you!

 x = 40.62154549  40.75664465  36.73637154  36.83770617  43.3711409  43.5308889  42.232434  41.9015272;
 y = 39.7716099          36.2757949  36.522279  31.2306774  31.4157967  32.9799975  32.7431478;

h = ttest2(x,y);
h = ttest2(x,y,Name,Value);
[h,p] = ttest2(x,y,'Vartype','unequal');
[h,p,ci,stats] = ttest2(x,y);

[Dries Boon]

This is the error by the way: Error: File: test.m Line: 1 Column: 17 Unexpected MATLAB expression.

[Dennis]

31,4157967 is , seperated

[Dries Boon]

I fix it, but still the two second numbers of x and y are causing an error

Answer 1

[Stephen23]

Simply pasting individual numbers does not define a vector: they need to be specified within square brackets. Currently those values are not joined into one vector using square brackets and so MATLAB interprets the first number as a scalar to be allocated to x, and then the trailing numbers are simply a syntax error.

To define a vector of numbers use [], e.g.:

x = [40.62154549, 40.75664465, 36.73637154, 36.83770617, ... ]

How to define vectors/matrices is explained in the introductory tutorials, which are highly recommended for all beginners:

https://www.mathworks.com/help/matlab/getting-started-with-matlab.html

[Dries Boon]

that worked! thanks!