From the PARcore Data Visualization Studio Landing Page, navigate to this report by selecting the Relative Efficiency icon. This report is only applicable for requests that include the Analysis Type of Item Response Theory with an Equate analysis selected and the optional analysis of "Relative Efficiency". If this request does not include any analyses with the optional analysis selected the report will not appear on the landing page and cannot be selected.
The bento box menu icon at the top left of the report can be used to navigate back to the Landing Page.
Information about the request that is being viewed are displayed at the top, including the request number, admin, test, form ID or package ID, and user form code.
When first launching the report it will be empty. Make initial filter selections in order to visualize the report. Any filter with a red asterisk indicates it is required to have a selection made before the report can be displayed.
Choose Filters
Refer to Visualize Results for general information about filter navigation for any report. The filter for this report is:
- Analysis - select one analysis sequence number to view at a time. The analysis sequence number will reflect the sequencing from Request Details for this request.
- Upon first initializing this dashboard, the filter will display as (Choose your analysis) and a selection must be made.
- Select the search icon (magnifying glass) and enter search text to see Analysis filter options for the request you are viewing.
- Using an asterisk in the search text box will display all possible analyses to choose from.
- Once the current analysis results have been reviewed, continue to use the search feature or utilize the slider arrows (< and >) to view each analysis one at a time. If there is only one analysis for this report the navigation buttons will be disabled.
- The analysis template name used for this request analysis as well as the score being analyzed will also be included in the filter description.
- Only analyses that include the "Relative Efficiency" optional analysis will be available in this filter.
- Upon first initializing this dashboard, the filter will display as (Choose your analysis) and a selection must be made.
- Report View- select the radio button for the preferred report view. The default display is "Chart and Table", which will provide both the Relative Efficiency chart and the table of statistics. If desired, change the view to "Chart Only" to collapse the table of statistics display and maximize the charts to full screen.
Chart
- The x-axis score will be Scale Score if the optional reference form conversion request was included in the request details, or Raw Score if there is no reference form conversion included.
- A tooltip displays when hovering over a data point to review the relative efficiency value and score value at that data point.
If desired, utilize the zoom feature to expand any of the plots to get a closer view of a set of data points. Refer to Visualize Results for general information about zoom functionality.
Table of Statistics
If "Chart and Table" view is selected, the right side of the report will include a list of the statistics from the analysis. This table includes the following:
- New Form Raw Score
- Scale Score
- This column will not be included if it is a raw-to-raw analysis with no reference conversion selected in Test Settings.
- New Form Score Information
- Reference Form Score Information
- Efficiency of New Form Relative to Reference Form
Additional statistics are produced and available to users beyond what is presented in the Data Visualization Studio. Refer to the RTSSTAT API and Download Statistics help documentation for more information regarding accessing all of the available statistics produced.