At the least, you are missing the right-most square bracket. That is, it
should be _b[postrt] .
> -----Original Message-----
> From: Siyam,AA (pgr) [SMTP:[email protected]]
> Sent: Wednesday, June 12, 2002 12:54 PM
> To: [email protected]
> Subject: st: Bootstrapping and t-tests
>
> Dear colleagues,
>
> Is possible to run a bootstrapped t-test on the paired-observation
> variables preert and postrt. I tried the command line below
>
> bs "ttest preert=postrt" "_b[preert] _b[postrt", reps(50) n(10)
>
> The error message I am getting says:
> error when command executed on original dataset
> invalid syntax
> r(111);
>
> Many thanks for your help in advance.
>
> Regards,
> Amani
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