Trouble using zscore function

Question

Elizabeth Mahoney 2018-6-19

编辑： TED MOSBY 2024-10-18

I am having trouble using the zscore function. I am getting the error:

Error using mean Too many input arguments.

Error in zscore (line 43) mu = mean(x,dim);

Even when I use the example from https://www.mathworks.com/help/stats/zscore.html I get this error.

 load lawdata
[Z,gpamean,gpastdev] = zscore(gpa)

Does anyone know how I can fix this?

Answer 1

TED MOSBY 2024-10-10

编辑：TED MOSBY 2024-10-18

Hi Elizabeth,

I ran the two lines of code you provided below, and they didn't throw any errors for me.

load lawdata 
[Z,gpamean,gpastdev] = zscore(gpa) 

Additionally check:

Ensure that there is no custom implementation of mean that is overshadowing the built-in MATLAB function. You can check this by running:

which mean -all

It's possible that your MATLAB path is altered and causing the issue. You can restore the default MATLAB path by executing:

   restoredefaultpath; 
   rehash toolboxcache; 

Try running your script in a clean MATLAB session without any additional toolboxes or custom scripts loaded.

Hope this helps!