Data Import
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      Benchmark Statistics Data Import Format and Sample File

      Benchmark Statistics Data Import Format

      To create the CSV file, use the data format table and the sample csv file as a guide, located at the end of end of the article.

      Benchmark Statistics Import Sample File 

       

      Header

      Required

      Data Type

      Data Requirements

      ItemName

      Yes

      String

      ItemName must match the Item Name for an existing item in the Blueprint.

      SampleSize

      No

      Integer

      The number of cases used in the analysis.

      Validation:
        • > 0

      DifficultyProportionCorrect

      No

      Float

      Validation:
        • 0.0 to 1.0
        • Rounded to 9 decimals

      CorrectedItemTotalCorrelation

      No

      Float

      Validation:
        • -1.0 to 1.0
        • Rounded to 9 decimals

      ItemTotalCorrelation

      No

      Float

      Validation:
        • -1.0 to 1.0
        • Rounded to 9 decimals

      StandardDeviation

      No

      Float

      The standard deviation of the scored item responses.

      Validation:
        • 0 to 0.5
        • Rounded to 9 decimals

      CorrectedOptionTotalCorrelation_#

      No

      Float

      The corrected option-total correlation for each option; the correlation between selecting the option and the adjusted total exam score.

      "#" should be replaced with the Response Option ID, and there should be a column for each response option for the given item type.

      Validation:
        • -1 to 0.5
        • Rounded to 9 decimals

      CorrectedOptionTotalCorrelation_Missing

      No

      Float

      The corrected option-total correlation for omitted/not reached missing responses; the correlation a missing response and the adjusted total exam score.

      Validation:
        • -1 to 0.5
        • Rounded to 9 decimals

      ProportionChoosing_#

      No

      Float

      The proportion of the sample who selected the option.

      "#" should be replaced with the Response Option ID, and there should be a column for each response option for the given item type.

      Validation:
        • 0.0 to 1.0
        • Rounded to 9 decimals

      ProportionChoosing_Missing

      No

      Float

      The proportion of the sample who omitted or did not reach the item.

      Validation:
        • 0.0 to 1.0
        • Rounded to 9 decimals

      AngoffCoefficient

      No

      Float

      The judged probability that a minimally-qualified candidate would pass this item.
           – Or --
      EmpiricalAngoffCoefficient - EAC, the empirical probability that a minimally-qualified candidate would pass this item computed using borderline groups, or a similar methodology.

      Validation:
        • 0.0 to 1.0
        • Rounded to 9 decimals

      Comment

      No

      String

      Comment about the Benchmark statistics, such as a description of the sample group.

      Validation:
        • 500 characters or less

       

      Contact Us

      If you have any questions or need additional assistance, please contact us by either emailing support@certiverse.com or by submitting a ticket from this article.