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Chapter 3 Project: Investigating Relationships

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Victoria Haughwout

on 13 February 2014

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Transcript of Chapter 3 Project: Investigating Relationships

Chapter 3 Project: Investigating Relationships
design by Dóri Sirály for Prezi
Introduction
In my project, I am investigating whether the national debt or the average American's debt is better to predict the average price of a home.
My two explanatory variables are the national debt and the average American's debt. The response variable is the average price of a home. We can expect to see a positive relationship.
Data
I obtained my information from the internet. I used the following websites:
http://www.census.gov/const/uspricemon.pdf
http://data360.org/dsg.aspx?Data_Set_Group_Id=273
http://www.treasurydirect.gov/NP/debt/search?startMonth=01&startDay=01&startYear=1995&endMonth=12&endDay=31&endYear=2010

Graphs
Summaries and Interpretations
A. National Debt
a= 138893
b=12612.7
ŷ=138893+12612.7x
r= .66152
r²= .437609
Conclusion/ Discussion
The better decision would be the nation's debt. The two explanatory variables were reasonably close to one another. The correlation between the nation's debt and average home price was slightly higher than the correlation between average American debt and average home price. In a, 43% of the data is accounted for, whereas in b only 40% of the data is accounted for.
Both graphs show a positive correlation between the the two variables. They are very similar to each other
B. Average American's Debt
a= 123700
b= 4.39226
ŷ=123700+4.39226
r= .6399
r²= .409472
Residual Plots
a.
b.
a.
b.
a.
b.
Full transcript