| Narxoz Student Research-2021
In the above expression, the coeffi
cients β
1
to β
5
represent slopes
of the fi ve control variables. In turn, the variables correspond to the
following parameters:
1. Wp – Annual average of the working population in Kazakhstan,
in thousands of people
2. g
fi
– Annual gross foreign investment, in USD millions
3. migr – Net annual migration of the population, or the sum of
people who left and entered the country during the year.
4. sal – Average monthly salary, in USD
5. rtrade – Annual retail trade, in USD millions
6. exptr – Annual export trade, in USD millions
In order to check whether the parameters of the produced model
will be statistically signifi cant, we derive the summary of the model in
RStudio. Based on the results presented on the Figure 1, all the control
variables have high level of statistical signifi cance, and the lowest
level of signifi cance of the Export Trade parameter stands within 95%
confi dence interval:
Figure 1: Summary of the Multiple Linear Regression Model (RStudio)
From the Figure 2, we can see that the growth of the working
population is positively associated with the average monthly salary and
the annual retail trade:
From the above fi gure, we can also notice that the average salary
increased gradually throughout the range of 20 years, and so did the
annual volume of retail trade. Otherwise, the increased volume of
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Достарыңызбен бөлісу: | 
