On 7 June 2011 22:19, Anutechia Asongu <simplice_peace@yahoo.com> wrote:

Dear all,
I have another preoccupation, I'm carrying-out a meta analysis and have to regress 't-statistics" on some independent variables. However most studies present "P-values" beside regression coefficients. Is there any easy way of transforming these P-values into t-statistics of two-tailed distributions?.
Thanks in advance

--- On Sat, 6/4/11, Allin Cottrell <cottrell@wfu.edu> wrote:

From: Allin Cottrell <cottrell@wfu.edu>
Subject: Re: [Gretl-users] how to delete observations and merge databases
To: "Gretl list" <gretl-users@lists.wfu.edu>
Date: Saturday, June 4, 2011, 2:28 AM

On Fri, 3 Jun 2011, Leandro Zipitria wrote:

> I have a panel dataset and I want to delete the first 31 observations of
> each unit. I have read that one possible way is to restrict the sample and
> then save it.

That's right.

genr time
smpl time > 31 --restrict
store smaller.gdt

> The second one is a little more tricky. I have one dataset as a panel, and
> another that has additional information of some of the variables, but just
> once. The two databases are of different length. Is there any way that gretl
> merge this two databases and repeat each value of ?

Yes. Given a panel dataset of dimension N x T you can append data
with a series length of N or T and the added data will be repeated
as appropriate to complete the panel.

Allin Cottrell

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