STAT 271 PSU Forecasting Time Series Data Projet
Prince Sultan UniversityThe College of Humanities and Sciences
STAT 271 (212)
REQUIRED: Group flip Project: Forecasting Time-series Data
1. As a group select a recent case study with time series price data that includes two or more items to
be analyzed. You can use data from your area of specialization and excel software.
2. Use sample size, which is not more than 15 and not less than 10 observations.
3. After reading section 16.1 from your both eBook and slides, identify the following for your
i. Time series component. You can draw a line chart to support your answer.
ii. Compute the simple Index number for your data (use period one (year, day,…etc.) as a base
iv. Determine the actual percentage growth between the base period and the tenth period in your data
for each item.
v. Determine the actual percentage growth between period six and the tenth period in your data.
4. Discuss your results in each point as stated below.
1. You will be required to write and submit a short paper (Max. 4 pages, typewritten and have at
least 12-point font) that describes your case study.
2. The paper should be presented as follows:
• Research methodology
• Research findings and discussion (Step 3)
• Appendix contains the data used in your research
• References in APA style
3. This is a group project with 3-4 students per group.
4. To collect your data you can refer to the PSU database or any other database.
5. This project is due on the 13th week of the semester (Thursday, April 21, 2022). The
date cannot be adjusted.
6. Do not use this sheet as your cover page.
7. Submit your Project soft copy in Turnitin in Moodle. Plagiarism will be tracked and similarity
should not exceed 25%.
8. Worksheet solution for this topic is available in Moodle.
Submission date: 08-Dec-2021 05:41PM (UTC+0300)
Submission ID: 1724411616
Word count: 546
Character count: 2896
Saudi GDP and Inflation
Stat 271 Project Assignment
This paper analyzes the relationship between the Gross Domestic Product of Saudi Arabia
and Saudi 1nflation and the effect of GDP on inflation. Historically, the Saudi economic
growth has been accompanied by an increase in the price level of goods and services, there
are a lot of scenarios that can lead GDP and inflation to have either a positive or a negative
relation and this paper will examine what is the current relation between GDP and inflation
and whether GDP is a reliable indicator of Saudi inflation.
II) Research methodology
In this research after collecting the Saudi GDP and lnflation data from 2008 to 2020, we
plotted the data on line charts for both of the variables in order to identify the trend and timeseries components in both the GDP and inflation. We also computed a simple-index to
compare the two variables and estimated the correlation to determine whether there is a
relationship between the GDP and inflation and whether it is positive or not, and finally how
strong the relationship is to determine if GDP growth is a good indicator or not.
III) Research findings and discussion
Saud i GDP
Saudi GDP Growth
For the Saudi GDP, we identify an upward trend as the GDP is increasing on the long-term,
we also identify another time-series component which is a cycle that happens every 5-6 years
and we believe that is caused by the oil price cycle as the economy relies heavily on oil. The
decline in 2020 can be viewed as a random component and can be attributed to the COVlD-19
2D 1 L
2D L S
For the Saudi inflation, when we compared it with the GDP growth we found the same
upward trend, we also identified the 2020 random component that we believe was caused by
the VAT increase from 5°/c to 1 5°/c during the pandemic. We also estimated the correlation
between Saudi GDP and inflation and the result was 0.848 which indicates that there is a
strong positive relationship between the two variables, which leads us to conclude that the
Saudi GDP might be a good indicator for forecasting Saudi inflation.
-Actual percentage growth between the base period and the tenth pericd:
GDP = ( 155.15/ 100) -1 = 55.15%
lnflation = (135.10/100) -1 = 35.10*/r
-Actual percentage growth between the sixth period and the tenth period:
GDP = ( 155.15/ 1 77.05) — 1 = – I 2.37%
lnflation – (135.10/123.62)-1== – 9.29%
In conclusion, based on both the line charts and the simplicity indices, we believe that Saudi
inflation can be forecasted by Saudi GDP as both of the line chart and the simple-index
demonstrate the positive relationship between the variables and that inflation often lags the
GDP growth which can make it helpful in forecasting inflation.
Sources and References:
-The World Bank. (202 I ). UNDP pre›‹v th [unnuul °?e) – Saudi Atohio 1 Daur. Worldbank.Org.
httDs: //data.worldbank .ore/indicator/NY.GDP.MKTP.KDJ G ?1ocations=SA
– Statista. (2021 , November 1 6). C D£’ ‹;/.Souzfi Atohio 2026.