Multiple functions in stats toolbox not working, despite active license?

Hi,

I am running matlab R2018b on my Mac OS with Stats toolbox installed. It was working great for a while but recently it has been giving me errors when I am trying to check assumptions of ANOVA, both for vartestn() and stats.resid.

Here is the code:

[p stat] = vartestn(percent_abs(1,1:63)', 'TestType', 'LeveneAbsolute')
%show equality of variance necessary for ANOVA
res = stats.resid(percent_abs(1,1:63)); 
%Find residuals of data.
figure(6)
normplot(res)
title('Normal Probabilty Plot for Residuals') 
%Plot normality of residuals

I can run vartestn without the test type, but I need to be able to run the Levene test. Here is the error it gives me.

Undefined function or variable 'testname'.

Error in vartestn (line 272)

Table{k+4,1} = testname;

Error in (line 85)

[p stat] = vartestn(percent_abs(1,1:63)', 'TestType', 'LeveneAbsolute')

I also get: Undefined variable "stats" or class "stats.resid".

I've made sure that the toolbox was downloaded and activated. I have used this exact code and these functions before and it worked with no issues. I am thinking it is a toolbox problem since the error refers me to the function in the toolbox for the vartest? Any thoughts would be helpful, TIA.

Answer 1

[Star Strider]

Run these commands from you Caommand Window or a script:

restoredefaultpath 
rehash toolboxcache 

If you are still having problems after that, use the Contact Support link to request Technical Support.

[Sarah Stolt]

I tried restoring paths and rehash trick. I'll contact support. Thanks.

[Star Strider]

My pleasure!

Unfortunate that this didn’t work.