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1 Random Sample: Before you begin your analysis you are required to take a random sample of size 110 from the 170 cases in the file. Use the file Random_Sample_Generator-2.xls to do this. Your tutor will show you how this can be done in EXCEL. Answers to the questions below are to be based on your sample of 110 cases. Make sure to keep a safe copy of the sample you use since you cannot use Random_Sample_Generator-2.xls to reproduce it. Provide a printout of the data in your sample, with ID numbers in ascending order. 2 Summary table: 2 | P a g e a) i) Prepare a summary table that shows the mean, standard deviation and 95% confidence interval for the mean of the following variables: Selling Price, Number of bedrooms, Size of house, Distance from city centre ii) Use some of the information in (i) to describe a typical house in these suburbs. b) i) Prepare a summary table that shows the mean and standard deviation of Price for houses in the 4 Suburbs according (subject) to the variable Bedrooms. Think carefully about the layout of the rows and columns of your table. As well as means and standard deviations you should also include the number of houses in each group. So each cell in your final table should contain the mean, the standard deviation and n, the number of houses in that group. ii) Comment, in bullet point form, on the Price of any combinations for Suburb and Bedrooms variables (i.e. cells in the table). 3 A local real estate firm has told a client that the average Price of a house in Suburb 2 is $420,000. You have been asked to evaluate this claim. Use a One Sample t Test for the Mean to evaluate the claim that the average price is higher than $420,000. 4 Size and Price: One of the clients wants information on Size of houses as it relates to price. a) First create a new variable (column) labelled Size Group which divides Size up into two size groups as follows: Under 200 square meters Small 200 square meters and over Large b) Produce suitable graphs or charts to help in providing the information requested on the Size of the house as it relates to Price. c) Find 95% CI intervals for the small and large houses Price. Is there any interaction (overlap) between the two Confidence Intervals? What does this tell you about the Prices for the two Sizes. 5 Produce a scatter plot of Price vs Size (Size should be on the horizontal 4 marks 3 | P a g e axis). Make sure you label your axes properly and that your graph has an appropriate title. Briefly describe the nature of the relationship between these two variables. Use XL to carry out a regression analysis on these two variables. Copy the output into your assignment and use it to respond to the following: a) Write down the regression equation. b) State the R-Square value and the Standard Error and explain what they mean with respect to this data. c) Write down the value of the gradient of the regression line and explain what it means in this case. d) Is the constant or intercept value significant in this case? How do you know this? e) Briefly explain why you think this regression model is, or is not, a good model. Price and Suburb indices: a) Determine the Suburb indices for each suburb after regressing Price with Size of the house. Use the multiplicative model in calculating suburbs indices: ImprovedPredictedPrice=PredictedPrice(as a function of Size) × Suburb Index. Hint: Use a similar technique to the time series technique that calculates seasonal indices. b) Interpret the suburb indices in the context of the problem. 6 Using information from your analyses write a short concluding paragraph about house prices and sizes for different suburbs.
what form of government you would choose and why. Include the opposing position along with your rebuttal of that opposing position. Use at least three sources to support your position.
Distinguish between American liberalism and American conservatism. In particular, what goals and concerns do each emphasize? Explain in what ways these American idealisms are different from the broader terms of liberalism and conservatism.
Explain what legal rights, if any, Sally has as to this contract for the car. Discuss specific points of third party liability laws.
Social promotion is the promoting of a student from one grade to the next even if he or she is failing courses.
One person dies and three others are injured. What crimes has Joe committed? Is Joe liable civilly, criminally, or both?
Explain how you will cope with stress as a counselor. Be clear about what you feel will cause you the most stress as a counselor. Discuss how coping with stress is related to ethics.
The fourth theory is the Distributed-Functions Approaches is where the leader helps his group perform acts within a group in order to reach goals.
The Airport Noise and Capacity Act of 1990 was the first comprehensive noise regulation statute. This was said to be the most significant piece of aviation legislation since the deregulation act. What was its impact on the aviation industry.
Critically discuss your strategy for disseminating the results of the project to key stakeholders and to the greater health community.
Please help me examine a healthcare organization's distribution channels and identify what channel is used. Help me explain how an organization works to meet the demands of the consumers by answering the following questions
A 3.60-g lead bullet at 28.0 degrees C is fired at a speed of 230 m/s into a large block of ice at 0 degrees C, in which it embeds itself. What quantity of ice melts?
How would you identify ergonomic problems associated with the use of visual display units? Describe the measures which can be taken to eliminate these problems. What is a Job Safety Analysis? Describe briefly the steps which should be taken to c..
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