17 Raw Data and Data Dictionary.pdf - DATA DICTIONARY Next...

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DATA DICTIONARY Start-Tech Academy Next step should be to understand the data. You should know variable definition and distribution along with table’s unique identifiers and foreign keys Data Dictionary A Comprehensive Data Dictionary should include 1. Definition of predictors 2. Unique identifier of each table ( or Primary Keys) 3. Foreign keys or matching keys between tables 4. Explanation of values in case of Categorical variables
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DATA DICTIONARY Start-Tech Academy Examples Data Dictionary House Pricing Dataset The data set contains 506 observations of house prices from different towns. Corresponding to each house price, data of 18 other variables is available on which price is suspected to depend price Value of the house crime_rate Crime rate in that neighborhood resid_area Proportion of residential area in the town air_qual Quality of air in that neighborhood room_num Average number of rooms in houses of that locality age How old is the house construction in years
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