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st: RE: How to filter data

From   "Cornelius Nattey" <>
To   <>
Subject   st: RE: How to filter data
Date   Tue, 15 Jun 2010 12:43:59 +0200

Hi Thomas,
You can use the table command the syntax is as below
table year, c(sum sales) 
where sales is represent of several companies
Please clarify the the other question.
-----Original Message-----
From: [] On Behalf Of Thomas Gericks
Sent: Tuesday, June 15, 2010 12:26 PM
Subject: st: How to filter data


I am analyzing a paneldataset.
I have two questions:

1. How do i sum up all the sales of several companies per year or quarter. Do i have do to that in a new dataset?

2. I gernerated a new variable that marks when a company grew in the last quarter more than 50% with a 1. now i want to delete all observations of that company in the dataset in order to limit biases of M&As. I have different number ob observations per company( quartely reporting)

As I have no programming background I'm overstrained with the syntax.

Thank you very much for your help

Best regards,
Thomas Gericks
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