From the PARcore Data Visualization Studio Landing Page, navigate to this report by selecting the Summary Statistics and Correlations report icon.   This report is only applicable for requests that include the Analysis Type of Item Response Theory and include the option to include TBLT analyses.

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 will also be included in the filter description.

Summary Statistics and Correlation Table

The summary statistics for the common items appear in a table.  The a-parameter and b-parameter summary statistics will be displayed separately for all common dichotomous items and all common polytomous items (when applicable).   For polytomous items, additional (b-d) parameter statistics are summarized.

The summary statistics that are displayed are Number of Items, Sum, Sum Squares, Mean, SD (N-1), and SD (N) for both the reference common items and the transformed new common items.  The Sum Cross-Product and Correlation between the transformed new and reference common items will also be calculated and displayed in a column labeled "Jointly".