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st: Stata cannot do math?
From
Yu Xue <[email protected]>
To
[email protected]
Subject
st: Stata cannot do math?
Date
Wed, 18 May 2011 18:44:14 -0500
Hi All,
This may be a stupid question. Here are the command and Stata output:
.set obs 50
.gen a=100.1
.count if a==100.1
0
.tab a
100.1
.sum a
variable obs mean s.d. min max
a 50 100.1 0 100.1 100.1
.gen b=a-100
.tab b
0.0999985
So, Stata shows that a is equal to 100.1, but actually, it is equal to
100.0999985....
Can anyone explain to me what this is? Do I have to set precision when
I do math in Stata? How to set precision?
Thanks!
Yu
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