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  2. List of statistical software - Wikipedia

    en.wikipedia.org/wiki/List_of_statistical_software

    Pandas – High-performance computing (HPC) data structures and data analysis tools for Python in Python and Cython (statsmodels, scikit-learn) Perl Data Language – Scientific computing with Perl; Ploticus – software for generating a variety of graphs from raw data; PSPP – A free software alternative to IBM SPSS Statistics

  3. Proto-value function - Wikipedia

    en.wikipedia.org/wiki/Proto-value_function

    Proto-value functions arise from reformulating the problem of value function approximation as real-valued function approximation on a graph or manifold. This results in broader applicability of the learned bases and enables a new class of learning algorithms, which learn representations and policies at the same time.

  4. Entity–attribute–value model - Wikipedia

    en.wikipedia.org/wiki/Entity–attribute–value...

    An entity–attribute–value model (EAV) is a data model optimized for the space-efficient storage of sparse—or ad-hoc—property or data values, intended for situations where runtime usage patterns are arbitrary, subject to user variation, or otherwise unforeseeable using a fixed design. The use-case targets applications which offer a large ...

  5. Data analysis - Wikipedia

    en.wikipedia.org/wiki/Data_analysis

    What is the sorted order of a set S of data cases according to their value of attribute A? - Order the cars by weight. - Rank the cereals by calories. 6 Determine Range: Given a set of data cases and an attribute of interest, find the span of values within the set. What is the range of values of attribute A in a set S of data cases?

  6. Exploratory data analysis - Wikipedia

    en.wikipedia.org/wiki/Exploratory_data_analysis

    The distribution of values is skewed right and unimodal, as is common in distributions of small, non-negative quantities. Histogram of tip amounts where the bins cover $0.10 increments. An interesting phenomenon is visible: peaks occur at the whole-dollar and half-dollar amounts, which is caused by customers picking round numbers as tips.

  7. Design effect - Wikipedia

    en.wikipedia.org/wiki/Design_effect

    Specific value has an absolute meaning; weights represent the amount of information in the dataset Inverse-variance weights Each element is assigned a weight that is the inverse of its known variance When all elements have the same expectancy, using such weights for weighted averages has the least variance Normalized (convex) weights

  8. The Secret Meaning Behind Kate Middleton’s Hat Choice ... - AOL

    www.aol.com/secret-meaning-behind-kate-middle...

    Kate Middleton's body language was upbeat and confident during the royal family's annual Christmas walk, and she sent a specific message with her hat choice. The Secret Meaning Behind Kate ...

  9. x̅ and s chart - Wikipedia

    en.wikipedia.org/wiki/X̅_and_s_chart

    In statistical quality control, the ¯ and s chart is a type of control chart used to monitor variables data when samples are collected at regular intervals from a business or industrial process. [1] This is connected to traditional statistical quality control (SQC) and statistical process control (SPC).