cuiping-wei commented 4 years ago

Make some improvements for the research questions

Original question(from original report directly)

Primary question
What factors can affect House Price Index (HPI) and how they affect HPI.
Sub-questions
1. The first sub-question we look at is the relation between national HPI and state HPI.
2. The second sub-question looks at the effect of Mortgage rates on HPI.
3. The third sub-question is to analyze the effect of recession on HPI values.

Primary question
What interesting economic secrets can HPI and mortgage rates tell us?
Sub-questions
1. How similar is the change in state HPI with national HPI?
2. Do lower mortgage rates mean higher HPI? Can the long mortgage rates predict HPI?
3. Can HPI and mortgage rates provide evidence of a subprime crisis? (Explore recession)

There are some new research questions we want to explore further from the data.

Are HPI more likely to be higher in prosperous states?
Can we find any house price bubble in the U.S from 1975 to 2018?
Is the housing price index rising or falling? Is the mortgage rate rising or falling? Are their trends consistent?

yawenzhang9701 commented 4 years ago

Introduction Based on the question we fixed, we will introduce some interesting topics of HPI and mortgage rates.
Data Description The origin version only talks about the background of the data. We will add the background of HPI, mortgage rate and recession data with the whole data structure together in order to provide a more comprehensive data description. Data source references and data limitation will also be added.
Analyses and Finding Three old questions: it will be more divergent instead of a true or false question. There will be more types of graphs and calculations in this part. Two new questions: we will concentrate on some popular questions in the real world today, such as the average HPI in different states and the housing bubble from 1975 to 2018 or the overall trend for HPI and mortgage rates.
Limitation The original version did not provide limitation analysis. Since the raw data has a lot of missing value, it may provide some restriction to our analysis.
Conclusion Provide a conclusion is necessary to conclude the latest analysis results.

cuiping-wei commented 4 years ago

In our analysis, we also added GDP data for U.S. states to support the new question 1: Are HPI more likely to be higher in prosperous states?