SEC Mutual Fund Prospectus Risk/Return Summary Data Sets	
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The Mutual Fund Prospectus Risk/Return Summary Data Sets provides text and
  numeric information extracted from the risk/return summary section of 
  mutual fund prospectuses. The data is extracted from exhibits to mutual 
  fund prospectuses tagged in eXtensible Business Reporting Language (XBRL).
  The information is presented without change from the "as filed" submissions
  by each registrant as of the date of the submission. The data is presented 
  in a flattened format to help users analyze and compare corporate disclosure 
  information over time and across registrants.

  The data sets will be updated quarterly. Data contained in documents filed 
  after 5:30PM Eastern on the last business day of a quarter will be included
  in the subsequent quarterly posting.

  https://www.sec.gov/dera/data/mutual-fund-prospectus-risk-return-summary-data-sets

  The Mutual Fund Prospectus Risk-Return Summary Data Sets (PDF, 207 kb) 
  https://www.sec.gov/dera/data/rr1.pdf 
  provides documentation of scope, organization, file formats and table definitions.

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Census Demographic profile
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A short intro 
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   The Demographic Profile Summary File contains 100 percent data asked of 
   all people and about every housing unit on topics such as sex, age, race, 
   Hispanic or Latino origin, household relationship, household type, group 
   quarters population, housing occupancy, and housing tenure. 

   GEOGRAPHIC CONTENT
     The Demographic Profile Summary File is released as individual files for 
     the United States, each of the 50 states, the District of Columbia, and 
     Puerto Rico. The data items are identical for all files, but the geographic
    coverage differs.

    The summary level sequence chart outlines the hierarchical and geographic 
    summaries in their entirety. 
 
  To download all data, type
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    .dumpCensusDemographicProfile

  Source of the data 
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     https://www2.census.gov/census_2010/03-Demographic_Profile/

  Manual 
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     https://www.census.gov/prod/cen2010/doc/dpsf.pdf

  Manual about the data structure 
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     https://www2.census.gov/census_2010/03-Demographic_Profile/0README_DPSF.pdf

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