# 1. An Ice Cream shop owner wants to coordinate his stock levels with his sales. He believes he could forecast his sales based on the day’s temperature and whether it’s a weekend or not

1. An Ice Cream shop owner wants to coordinate his stock levels with his sales. He believes he could forecast his sales based on the day’s temperature and whether it’s a weekend or not. He collects data from 40 different days. The data is stored in Ice Cream.gdt
a) Graph the data using the appropriate graph (copy and paste it from gretl).
b) Use gretl to estimate a linear regression model to explain Ice Cream sales. Show your final results (copy and paste it from gretl)
c) Write your final estimated regression model.
d) Why is this the best model you came up with?
f) Use your model to forecast ice cream sales if temperature is 28 degrees on a weekend.
g) Provide a 95% confidence interval of your forecast.
2. The Ministry of Economy is interested in building a model to explain consumption behavior among middle class households. It picks a sample of 35 households and collects data about their consumption, income, wealth, size, and age. The data is available in the file Consumption.gdt. The monetary data is in thousands of dollars.
a) Graph the data using the appropriate graph (copy and paste it from gretl).
b) Use gretl to estimate a linear regression model to explain Ice Cream sales. Show your final results (copy and paste it from gretl)
c) Write your final estimated regression model.
d) Why is this the best model you came up with? (Explain)
e) Diagnose the model for multicollinearity.
g) Use your model to forecast consumption for the following two family:
Family 1: Income (50), Wealth (10), Size (5), Age (46)
3. The file Morocco GDP.gdt contains data on Morocco’s Gross Domestic Product, agricultural value added, exports of goods and services, tourism receipts and remittances received from Moroccans living abroad.
a) Use the appropriate graph to represent the variables. (copy &paste it from gretl)
b) What should be done to these variables before we run a regression on them?
c) Estimate a linear regression model to explain Morocco’s GDP.
d) Are the coefficients significant? Drop any insignificant coefficients and re-estimate the model. Show your final results (copy and paste it from gretl)
e) Why is this the best model you came up with? (Explain)
4. Google is the one of the most prominent companies listed in the NASDAQ. The Excel file below shows its daily price from January to April 2015.
a) Use the appropriate graph to represent the price of Google stock (copy & paste it from excel).
b) What type of pattern does the stock displays?
c) Use the different Sheets in the Excel file to run the following univariate models:
• Naïve
• 5-day moving average
d) Forecast the value of the stock in May 1st. (Save your work in the embedded Excel file)
e) Which of the two models is better at forecasting this time series? (use MSE)
5. The Excel file below contains data on total monthly tourist arrivals to Singapore from January 2009 to December 2014. As you could see from the time series plot, the data is seasonal.
a) Develop a Multiplicative Decomposition model (Y = TS + e) of the variable and use it to forecast tourist arrivals in each month of 2015. (Show all your work and save it in the embedded Excel file)
b) Evaluate your model using R² and Theil’s U-statistics.

# Our Service Charter

1. ### Excellent Quality / 100% Plagiarism-Free

We employ a number of measures to ensure top quality essays. The papers go through a system of quality control prior to delivery. We run plagiarism checks on each paper to ensure that they will be 100% plagiarism-free. So, only clean copies hit customers’ emails. We also never resell the papers completed by our writers. So, once it is checked using a plagiarism checker, the paper will be unique. Speaking of the academic writing standards, we will stick to the assignment brief given by the customer and assign the perfect writer. By saying “the perfect writer” we mean the one having an academic degree in the customer’s study field and positive feedback from other customers.
2. ### Free Revisions

We keep the quality bar of all papers high. But in case you need some extra brilliance to the paper, here’s what to do. First of all, you can choose a top writer. It means that we will assign an expert with a degree in your subject. And secondly, you can rely on our editing services. Our editors will revise your papers, checking whether or not they comply with high standards of academic writing. In addition, editing entails adjusting content if it’s off the topic, adding more sources, refining the language style, and making sure the referencing style is followed.
3. ### Confidentiality / 100% No Disclosure

We make sure that clients’ personal data remains confidential and is not exploited for any purposes beyond those related to our services. We only ask you to provide us with the information that is required to produce the paper according to your writing needs. Please note that the payment info is protected as well. Feel free to refer to the support team for more information about our payment methods. The fact that you used our service is kept secret due to the advanced security standards. So, you can be sure that no one will find out that you got a paper from our writing service.
4. ### Money Back Guarantee

If the writer doesn’t address all the questions on your assignment brief or the delivered paper appears to be off the topic, you can ask for a refund. Or, if it is applicable, you can opt in for free revision within 14-30 days, depending on your paper’s length. The revision or refund request should be sent within 14 days after delivery. The customer gets 100% money-back in case they haven't downloaded the paper. All approved refunds will be returned to the customer’s credit card or Bonus Balance in a form of store credit. Take a note that we will send an extra compensation if the customers goes with a store credit.

We have a support team working 24/7 ready to give your issue concerning the order their immediate attention. If you have any questions about the ordering process, communication with the writer, payment options, feel free to join live chat. Be sure to get a fast response. They can also give you the exact price quote, taking into account the timing, desired academic level of the paper, and the number of pages.

Excellent Quality
Zero Plagiarism
Expert Writers

or

Instant Quote