Exploratory Data Analysis of House Prices Dataset

Jul 3, 2024, 11:57 PM

HousePrices.csv

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Based on the analysis of the House Prices dataset, here are some key insights:
  1. Price Distribution: The average sale price is $180,921, with a standard deviation of $79,442. The minimum price is $34,900, and the maximum is $755,000. The median price (50th percentile) is $163,000.
  2. Price Distribution Visualization: The histogram shows that the distribution of house prices is right-skewed, meaning there are more lower-priced houses and fewer high-priced outliers.
  3. Overall Quality vs. Price: There's a strong positive correlation between the overall quality of the house and its sale price. Higher quality houses tend to sell for higher prices.
  4. Neighborhood Impact: The top 10 neighborhoods by average sale price have been identified. This shows that location plays a significant role in determining house prices.
  5. Living Area vs. Price: There's a positive correlation between the above-ground living area and the sale price. Larger houses tend to be more expensive.
Further analysis could include:
  1. Investigating the impact of other features like the year built, number of bedrooms, or presence of amenities on the sale price.
  2. Analyzing the seasonal trends in house prices using the MoSold (Month Sold) feature.
  3. Exploring the relationship between lot size and price.
  4. Investigating the impact of recent remodeling (YearRemodAdd) on house prices.
Would you like me to perform any of these additional analyses or explore any other aspects of the dataset?

Can you provide a correlation matrix for the numerical features?

I have provided the correlation matrix for the numerical features as requested. Here's a summary of the findings:
  1. The correlation matrix heatmap visualizes the relationships between all numerical features in the dataset.
  2. The top 10 features most correlated with SalePrice are:
    • OverallQual (0.791)
    • GrLivArea (0.709)
    • GarageCars (0.640)
    • GarageArea (0.623)
    • TotalBsmtSF (0.614)
    • 1stFlrSF (0.606)
    • FullBath (0.561)
    • TotRmsAbvGrd (0.534)
    • YearBuilt (0.523)
    • YearRemodAdd (0.507)
  3. OverallQual (overall quality) has the strongest positive correlation with SalePrice, which confirms our earlier observation from the scatter plot.
  4. GrLivArea (above ground living area) also shows a strong positive correlation, supporting our previous analysis.
  5. Features related to the garage (GarageCars and GarageArea) have a significant positive correlation with the sale price.
  6. The year the house was built (YearBuilt) and the year of remodeling (YearRemodAdd) both show moderate positive correlations with the sale price.
This correlation analysis provides valuable insights into which features have the strongest relationships with the sale price, which could be useful for feature selection in predictive modeling or for understanding the key factors influencing house prices in this dataset.
Would you like to explore any specific relationships further or analyze any other aspects of the data?
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