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  2. PSPP - Wikipedia

    en.wikipedia.org/wiki/PSPP

    In the book "SPSS For Dummies", the author discusses PSPP under the heading of "Ten Useful Things You Can Find on the Internet". [4] Another review of free to use statistical software also finds that the statistical results from PSPP match statistical results for SAS, for frequencies, means, correlation and regression.

  3. Poverty gap index - Wikipedia

    en.wikipedia.org/wiki/Poverty_Gap_Index

    Poverty gap index estimates the depth of poverty by considering how far the poor are from that poverty line on average. [3] The poverty gap index sometimes referred to as 'poverty gap ratio' or 'pg index' is defined as an average of the ratio of the poverty gap to the poverty line. [4]

  4. Index (statistics) - Wikipedia

    en.wikipedia.org/wiki/Index_(statistics)

    In statistics and research design, an index is a composite statistic – a measure of changes in a representative group of individual data points, or in other words, a compound measure that aggregates multiple indicators. [1] [2] Indices – also known as indexes and composite indicators – summarize and rank specific observations. [2]

  5. Propensity score matching - Wikipedia

    en.wikipedia.org/wiki/Propensity_score_matching

    2. Match each participant to one or more nonparticipants on propensity score, using one of these methods: Nearest neighbor matching; Optimal full matching: match each participants to unique non-participant(s) so as to minimize the total distance in propensity scores between participants and their matched non-participants.

  6. Database index - Wikipedia

    en.wikipedia.org/wiki/Database_index

    A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of additional writes and storage space to maintain the index data structure. Indexes are used to quickly locate data without having to search every row in a database table every time said table is accessed.

  7. very few teams have won it all Key - images.huffingtonpost.com

    images.huffingtonpost.com/2009-03-19-cheatsheet.pdf

    This cheat sheet is the aftermath of hours upon hours of research on all of the teams in this year’s tournament field. I’ve listed each teams’ win and loss record, their against the spread totals, and