Why am I receiving this error when using the vartestn function?

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Victoria Helm
Victoria Helm 2020-6-30
评论： Victoria Helm 2020-7-1
I tried the following code and received this error:
>> vartestn(Table.trialNum,Table.Sex,Table.ID,'TestType','LeveneQuadratic');
Error using internal.stats.parseArgs (line 42)
Wrong number of arguments.
Error in vartestn (line 98)
internal.stats.parseArgs(okargs,defaults,varargin{:});
Can anyone help me understand what these errors mean?

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Adam Danz
Adam Danz 2020-7-1
编辑：Adam Danz 2020-7-1
In the code you shared, I see 3 inputs and one name-value pair.
vartestn(Table.trialNum, Table.Sex, Table.ID, 'TestType', 'LeveneQuadratic');
The syntax described in the documentation describes a max of 2 inputs followed by name-value pairs.
vartestn(x,group,Name,Value)
Furthermore, from the documentation, x can be specified as a matrix or column vector. If a grouping variable group is specified, then x must be a column vector. So, you have 1 too many inputs.
Decide which variable is your grouping variable and which variable contains the data you're testing.

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