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  2. Data cleansing - Wikipedia

    en.wikipedia.org/wiki/Data_cleansing

    Mandatory Constraints: Certain columns cannot be empty. Unique Constraints: A field, or a combination of fields, must be unique across a dataset. For example, no two persons can have the same social security number. Set-Membership constraints: The values for a column come from a set of discrete values or codes. For example, a person's sex may ...

  3. Frequency (statistics) - Wikipedia

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

    A frequency distribution shows a summarized grouping of data divided into mutually exclusive classes and the number of occurrences in a class. It is a way of showing unorganized data notably to show results of an election, income of people for a certain region, sales of a product within a certain period, student loan amounts of graduates, etc.

  4. Pivot table - Wikipedia

    en.wikipedia.org/wiki/Pivot_table

    Column labels are used to apply a filter to one or more columns that have to be shown in the pivot table. For instance if the "Salesperson" field is dragged to this area, then the table constructed will have values from the column "Sales Person", i.e., one will have a number of columns equal to the number of "Salesperson". There will also be ...

  5. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  6. The best gifts for the mom who keeps telling you she wants ...

    www.aol.com/lifestyle/best-gifts-mom-2024...

    The very best gifts for men, from $2 to over $100; AOL. The best artificial Christmas trees of 2024; AOL. The best books of 2024, according to Goodreads; AOL.

  7. Microsoft Excel - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Excel

    Excel 2.0 was released a month before Windows 2.0, and the installed base of Windows was so low at that point in 1987 that Microsoft had to bundle a runtime version of Windows 1.0 with Excel 2.0. [120] Unlike Microsoft Word, there never was a DOS version of Excel.

  8. TikToker Joules Dies After Rare Brain Tumor at 6 Years Old ...

    www.aol.com/tiktoker-joules-dies-rare-brain...

    TikTok creator Joe Smith confirmed that his six-year-old daughter Jules Smith died on Monday, Dec. 9 after she was diagnosed with a fatal brain tumor.. In a video captioned "We love you our little ...

  9. L.A. 'missing women' cases go viral online, even as the facts ...

    www.aol.com/news/l-missing-women-cases-viral...

    In the same week last month, two women were reported missing by their families to the Los Angeles Police Department. Their cases garnered attention, quickly making national headlines. Volunteers ...