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  2. Content validity - Wikipedia

    en.wikipedia.org/wiki/Content_validity

    Content validity. In psychometrics, content validity (also known as logical validity) refers to the extent to which a measure represents all facets of a given construct. For example, a depression scale may lack content validity if it only assesses the affective dimension of depression but fails to take into account the behavioral dimension.

  3. Internal validity - Wikipedia

    en.wikipedia.org/wiki/Internal_validity

    Internal validity. Internal validity is the extent to which a piece of evidence supports a claim about cause and effect, within the context of a particular study. It is one of the most important properties of scientific studies and is an important concept in reasoning about evidence more generally.

  4. Verification and validation - Wikipedia

    en.wikipedia.org/wiki/Verification_and_validation

    Verification is intended to check that a product, service, or system meets a set of design specifications. In the development phase, verification procedures involve performing special tests to model or simulate a portion, or the entirety, of a product, service, or system, then performing a review or analysis of the modeling results. In the post ...

  5. Use AOL Certified Mail to confirm legitimate AOL emails

    help.aol.com/articles/what-is-aol-certified-mail

    If you're ever concerned about the legitimacy of these emails, just check to see if there's a green "AOL Certified Mail" icon beside the sender name. When you open the email, you'll also see the Certified Mail banner above the message details. When you get a message that seems to be from AOL, but it doesn't have those 2 indicators, and it isn't ...

  6. Data validation - Wikipedia

    en.wikipedia.org/wiki/Data_validation

    This check is essential for programs that use file handling. Format check Checks that the data is in a specified format (template), e.g., dates have to be in the format YYYY-MM-DD. Regular expressions may be used for this kind of validation. Presence check Checks that data is present, e.g., customers may be required to have an email address ...

  7. Sort incoming emails into folders with mail filters in AOL ...

    help.aol.com/articles/sort-incoming-emails-into...

    1. Sign in to Desktop Gold. 2. At the top, click the Keyword menu | select Go to Keyword.. 3. Type mail filters, then click Go.. 4. Click Create Filter.. 5. Choose a name for your filter and the criteria by which you want to filter emails.

  8. Software verification and validation - Wikipedia

    en.wikipedia.org/wiki/Software_verification_and...

    Software verification and validation. In software project management, software testing, and software engineering, verification and validation is the process of checking that a software engineer system meets specifications and requirements so that it fulfills its intended purpose. It may also be referred to as software quality control.

  9. Validity (statistics) - Wikipedia

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

    Validity (statistics) Validity is the main extent to which a concept, conclusion, or measurement is well-founded and likely corresponds accurately to the real world. [1] [2] The word "valid" is derived from the Latin validus, meaning strong. The validity of a measurement tool (for example, a test in education) is the degree to which the tool ...

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