7-3 Project Two Submission - Statistics
Competency
In this project, you will demonstrate your mastery of the following competency:
Apply statistical techniques to address research problems
Perform hypothesis testing to address an authentic problem
Overview
In this project, you will apply inference methods for means to test your hypotheses about the housing sales market for a region of the United States. You will use appropriate sampling and statistical methods.
Scenario
You have been hired by your regional real estate company to determine if your region’s housing prices and housing square footage are significantly different from those of the national market. The regional sales director has three questions that they want to see addressed in the report:
1. Are housing prices in your regional market higher than the national market average?
2. Is the square footage for homes in your region different than the average square footage for homes in the national market?
3. For your region, what is the range of values for the 95\% confidence interval of square footage for homes in your market?
You are given a real estate data set that has houses listed for every county in the United States. In addition, you have been given national statistics and graphs that show the national averages for housing prices and square footage. Your job is to analyze the data, complete the statistical analyses, and provide a report to the regional sales director. You will do so by completing the Project Two Template located in the What to Submit area below.
Directions
Introduction
1. Purpose: What was the purpose of your analysis, and what is your approach?
a. Define a random sample and two hypotheses (means) to analyze.
2. Sample: Define your sample. Take a random sample of 100 observations for your region.
a. Describe what is included in your sample (i.e., states, region, years or months).
3. Questions and type of test: For your selected sample, define two hypothesis questions and the appropriate type of test hypothesis for each. Address the following for each hypothesis:
a. Describe the population parameter for the variable you are analyzing.
b. Describe your hypothesis in your own words.
c. Describe the inference test you will use.
i. Identify the test statistic.
4. Level of confidence: Discuss how you will use estimation and conference intervals to help you solve the problem.
1-Tail Test
1. Hypothesis: Define your hypothesis.
a. Define the population parameter.
b. Write null (Ho) and alternative (Ha) hypotheses.
c. Specify your significance level.
2. Data analysis: Analyze the data and confirm assumptions have not been violated to complete this hypothesis test.
a. Summarize your sample data using appropriate graphical displays and summary statistics.
i. Provide at least one histogram of your sample data.
ii. In a table, provide summary statistics including sample size, mean, median, and standard deviation.
iii. Summarize your sample data, describing the center, spread, and shape in comparison to the national information.
b. Check the conditions.
i. Determine if the normal condition has been met.
ii. Determine if there are any other conditions that you should check and whether they have been met.
3. Hypothesis test calculations: Complete hypothesis test calculations, providing the appropriate statistics and graphs.
a. Calculate the hypothesis statistics.
i. Determine the appropriate test statistic (t).
ii. Calculate the probability (p value).
4. Interpretation: Interpret your hypothesis test results using the p value method to reject or not reject the null hypothesis.
a. Relate the p value and significance level.
b. Make the correct decision (reject or fail to reject).
c. Provide a conclusion in the context of your hypothesis.
2-Tail Test
a. Hypotheses: Define your hypothesis.
1. Define the population parameter.
2. Write null and alternative hypotheses.
3. State your significance level.
b. Data analysis: Analyze the data and confirm assumptions have not been violated to complete this hypothesis test.
a. Summarize your sample data using appropriate graphical displays and summary statistics.
i. Provide at least one histogram of your sample data.
ii. In a table, provide summary statistics including sample size, mean, median, and standard deviation.
iii. Summarize your sample data, describing the center, spread, and shape in comparison to the national information.
b. Check the assumptions.
i. Determine if the normal condition has been met.
ii. Determine if there are any other conditions that should be checked on and whether they have been met.
Hypothesis test calculations: Complete hypothesis test calculations, providing the appropriate statistics and graphs.
. Calculate the hypothesis statistics.
i. Determine the appropriate test statistic (t).
ii. Determine the probability (p value).
Interpretation: Interpret your hypothesis test results using the p value method to reject or not reject the null hypothesis.
. Relate the p value and significance level.
a. Make the correct decision (reject or fail to reject).
b. Provide a conclusion in the context of your hypothesis.
Comparison of the test results: See Question 3 from the Scenario section.
. Calculate a 95\% confidence interval. Show or describe your method of calculation.
a. Interpret a 95\% confidence interval.
Final Conclusions
1. Summarize your findings: Refer back to the Introduction section above and summarize your findings of the sample you selected.
2. Discuss: Discuss whether you were surprised by the findings. Why or why not?
What to Submit
To complete this project, you must submit the following:
https://learn.snhu.edu/content/enforced/679729-MAT-240-H4712-OL-TRAD-UG.21EW4/course_documents/MAT\%20240\%20National\%20Statistics\%20and\%20Graphs.pdf?_&d2lSessionVal=sTbDFrUJ2uF7YvTG12GnHYkMb&ou=679729Selling Price Analysis for D.M. Pan National Real Estate Company 2
[Note: To complete this template, replace the bracketed text with your own content. Remove this note before you submit your outline.]
Report: Selling Price and Area Analysis for D.M. Pan National Real Estate Company
Katie Foley
Selling Price and Area Analysis for D.M. Pan National Real Estate Company 1
Southern New Hampshire University
Introduction
[Include in this section a brief overview, including the purpose of the report.]
Representative Data Sample
[Present your simple random sample of 30, including the region you selected for your sample. Then identify the mean, median, and standard deviation of the median listing price and the median square foot variables.]
Data Analysis
[Discuss how the regional sample created is reflective of the national market. Compare and contrast your regional sample with the national population using the National Statistics and Graphs document found in the Module Two Assignment Guidelines and Rubric.
Explain how you have made sure that the sample is random. Explain your methods to get a truly random sample.]
Scatterplot
[Insert a scatterplot graph of the sample using the x and y variables noted earlier. Include a trend line.]
The Pattern
[Based on your graph, define each variable, and explain which variable will be useful for making predictions and why.]
[Describe the association between x and y in the scatterplot and determine its shape. Identify any outliers you see in the graph and explain why these occur and what they represent.]
[If you had a 1,200 square foot house, based on the regression equation in the graph, what price would you choose to list at? Explain.]New England
House Listing Price Data by Region Source: https://www.realtor.com/research/data/
Regional sample (n = 1000)
State County Region House listing price Cost per square foot Square footage
CT litchfield New England $329,050 $153 1,888
ME penobscot New England $169,500 $103 1,586
NH merrimack New England $299,950 $145 2,152
VT washington New England $289,950 $141 1,959
ME york New England $391,550 $230 1,719
VT washington New England $222,500 $135 1,670
NH strafford New England $311,471 $166 1,885
MA suffolk New England $699,050 $647 1,259
MA norfolk New England $642,500 $309 2,210
NH hillsborough New England $339,950 $164 2,090
RI washington New England $499,050 $259 1,871
NH belknap New England $289,950 $156 1,869
VT rutland New England $228,800 $117 1,993
RI newport New England $579,050 $292 2,128
MA franklin New England $230,050 $133 1,800
ME penobscot New England $157,050 $94 1,600
VT washington New England $300,050 $154 1,896
MA berkshire New England $379,950 $185 2,032
ME kennebec New England $187,050 $104 1,695
NH cheshire New England $266,550 $132 1,981
VT franklin New England $219,950 $120 1,750
CT new london New England $290,000 $153 1,848
NH merrimack New England $314,950 $146 2,174
NH merrimack New England $299,950 $140 2,176
NH hillsborough New England $358,950 $173 2,036
CT windham New England $204,000 $123 1,615
VT washington New England $295,050 $147 1,888
CT new london New England $268,500 $159 1,648
CT new haven New England $279,950 $158 1,724
MA plymouth New England $491,550 $244 2,028
MA franklin New England $223,800 $135 1,780
NH cheshire New England $260,500 $131 1,838
CT new haven New England $279,050 $153 1,790
ME penobscot New England $159,750 $100 1,588
NH grafton New England $259,300 $150 1,840
VT washington New England $299,050 $147 1,850
ME york New England $339,050 $205 1,772
CT new haven New England $272,421 $150 1,763
MA suffolk New England $764,050 $669 1,341
NH grafton New England $253,850 $143 1,741
RI newport New England $598,050 $292 2,170
MA middlesex New England $655,000 $276 2,400
MA franklin New England $299,050 $150 1,960
CT new london New England $274,950 $121 1,212
RI providence New England $279,050 $185 1,504
MA barnstable New England $599,950 $318 1,920
CT litchfield New England $398,050 $172 2,268
NH belknap New England $295,000 $162 1,838
NH belknap New England $269,950 $153 1,797
MA suffolk New England $799,050 $708 1,311
RI kent New England $275,050 $177 1,524
CT new haven New England $258,500 $146 1,410
VT windsor New England $349,050 $158 2,120
CT litchfield New England $329,950 $150 1,776
NH cheshire New England $234,550 $123 1,845
NH cheshire New England $258,864 $126 1,968
NH hillsborough New England $341,444 $160 2,126
RI washington New England $489,950 $253 1,812
CT middlesex New England $342,450 $170 1,874
CT new london New England $294,050 $154 1,8
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