Statalist


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: significance of mean and median


From   "Bastian Steingros" <Steingros@gmx.de>
To   statalist@hsphsun2.harvard.edu
Subject   st: significance of mean and median
Date   Mon, 24 Nov 2008 12:55:48 +0100

Hello everybody,

I have this problem:

After creating the descriptive statistics of my sample I want to show that the mean of a certain variable is statistically significant.
For example the mean of var1 is 0,45. Now I want to show that the positive sign is significant.
Is ttest the appropriate way to do so?

Moreover, in another sample I want to predict the GDP using two different regression models.
Finally, I want to compare the predicted values with the real GDP, that is, I will compare the mean and the median of the inaccuracy. 
Inaccuracy is defined as (GDP_predicted - GDP)/GDP

Is there a way to show that the median (mean) inaccuracies of the two models are statistically different from each other?

may be *signtest*???

thanks

bastian s
-- 
Sensationsangebot nur bis 30.11: GMX FreeDSL - Telefonanschluss + DSL 
für nur 16,37 Euro/mtl.!* http://dsl.gmx.de/?ac=OM.AD.PD003K11308T4569a
*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index