Re: t-test (student's, welch's)

On 19 Dec 2018, at 4:42, 'John Clements' via users-redirect wrote:

> I often find myself wanting to use a t-test. Wikipedia suggests that 
> really, I should probably be using Welch’s t-test, because it works 
> well when variances and sample sizes are different, and about as well 
> as student’s t-test when variances and sample sizes are the same.
>
> My vague recollection is that wanting these things makes me a 
> frequentist, and a Bad Person. And that this is related to the reason 
> that it’s not already present in the math/statistics package, whose 
> feet I am (seriously!) not fit to wash. Not in a statistical sense, 
> any way.
>
> Are there good reasons not to implement a simple package containing 
> welch’s t-test? And maybe student’s t-test, just for the heck of 
> it?

Why not extend math/statistics with both t-tests (welch-t-test, 
student-t-test)? I'm sure Neil would welcome it.

Jesse

PS Frequentists are alright by me.

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