Στατιστικές αναλύσεις με gretl

Ανάλυση με την βοήθεια του στατιστικού προγράμματος gretl

Software gretl is a statistical program that is available for free and is recommended for the analysis of time series data because of its ready-made procedures for analyzing them in a graphical environment, although it may contain a small degree of difficulty in learning it.

 

A small demonstration of its capabilities is presented below by examining world population data from 1900 to 2015.

 

The average value of the world population for this time period is shown in the table below and is around 3.56 billion while the average value of annual population differences is around 49 million.

We observe the transitions of differences during the first and second world wars, the continuous upward trend in both variables as well as the stabilization of differences around the value of 85 million after 1980.

 

The autocorrelation and partial autocorrelation plots show a possible AR(1) time series in both

 

 

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