Saturday 25 February 2017

Analysis of stanine and scale score results in Edge

Updates to Edge Student Manager on 23 February 2017 included new options for the analysis of assessments that include stanine and scale score results such as the STAR and PAT assessments.  In Achievement New it is now possible to add in a stanine normal distribution curve on bar graphs and also to display bar and scatter graphs for scale score results.

To access these tools from the assessment landing pages click on the chevron beside the assessment name.  Select the assessment point that you want to analyse and then click the View Current Attainment Analysis option.


Stanine Normal Distribution Curve

To display a stanine distribution curve on a bar graph from the Data tab on the graphing menu select Type = Bar Graph > Data Types = Stanines > Format = Percent and tick the Include Bell Curve option box.  Next click the Display button.


Note that where you are working with data for multi-year classes or groups it is also possible to tick the All Tests option box to display a single bar graph rather than a separate graph for each year level.

Scale Score Analysis

To display a bar graph of students scale score results in comparison to the NZCER's published national average scores select Type = Bar Graph > Data Types = Scale score > Format = Number. Click the Display button and a horizontal bar graph showing each students scale score result will be displayed.  The national average score for the relevant year level(s) will be displayed as a vertical line meaning that it is easy to consider individual students results in relation to the national average score.


An alternative option for displaying scale score results is to use a scatter graph.  Simply change the Type field to Scatter Graph and click the Display button.  A scatter graph may be particularly useful where you have large numbers of students in the group and want to quickly see how the group compares with the national average.  Hover over the dots to display student names and results.


These analysis tools are available for class, year level, group and whole school data in Edge.