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st: R: on counting and fractions in stata
From
"Carlo Lazzaro" <[email protected]>
To
<[email protected]>
Subject
st: R: on counting and fractions in stata
Date
Thu, 27 Oct 2011 14:11:33 +0200
Dear Rado,
I do hope that the following code (in Stata9.2/SE) can help:
-------------------------------------------------------
set obs 10
g y=10*uniform()
g threshold=3
g threshold_exc=1 if y> threshold
replace threshold_exc=0 if y<=threshold
sum threshold_exc
-------------------------------------------------------
Kindest Regards,
Carlo
-----Messaggio originale-----
Da: [email protected]
[mailto:[email protected]] Per conto di
[email protected]
Inviato: giovedì 27 ottobre 2011 13.39
A: [email protected]
Oggetto: st: on counting and fractions in stata
Dear all,
I face the following problem in Stata:
I have a series of daily observations on a given variable and I also have
one estimate of this variable that serves as a threshold.
I would like to estimate how many times this threshold is exceeded by
comparing the value of this estimate with the available data on daily
observations. Is it possible to estimate fractions in Stata in this
particular way?
Below is a simple example:
series estimate: 3.1
1.2
2.1
3.2
1.01
Given this data,I would like to get the following estimates (comments in
brackets):
count:1 (threshold is exceeded only once)
fraction: 1/4=0.25 (one out of 4 cases)
Many thanks in advance.
Rado
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