ScrewTurn Wiki - The sorting page

Modified: 2008/05/22 15:01 by thogan - Uncategorized
This page is where the actual sorting is done. On the left is a set of sliders representing all of the fields that can be used for sorting. Note: fields where the values are all different have been excluded as they cannot be used.

Sort page

If the slider is in the middle, the field will be ignored by the groupsort tool. Move it to the right to distribute people based on the particular attribute and to the left to group people together as far as possible. For example, if you had two fields 'gender' and 'age band' and you wanted to create groups that had a balance of men and women, but kept people of a similar age together, you would move the 'gender' slider one step to the right and the 'age band' slider one step to the left. Unused sliders (i.e. ones left at the central position) can be hidden to make it easier to see what is going on.

Where you are using several attributes to create groups, it is possible to give one characteristic greater weight than another by moving the slider two steps in the desired direction. However, bear in mind that the actual list may not permit a perfect distribution, so even with this refinement it may not be possible to acheive a perfect result. In any case, we would not recommend using more than about 3 or 4 characteristics for sorting, as it may not be possible to achieve a satisfactory result if you do, even with the ability to apply weighting. Note that in many cases attributes may tend to correlate with each other (e.g. age with height for children) in which case you should select the one that is more important.

The graphics indicate how well the sort has worked. At the overall level, the table shows how well an attribute has been distributed or clustered between the groups - based on the data in the list. The Group Details section shows how clustered or diverse each group is for a particular characteristic. A white circle shows a good spread of values (maximum diversity) whilst a solid blue circle indicates that all the values are the same; intermediate positions are represented by varying shades of blue. Note that it is quite possible for the overall level to show a good rating for a particular characteristic, even if many groups appear to show poor performance on the same measure. For example, if there are 10 groups and only 3 women to be distributed evenly between them, at least 7 of the groups will show a very poor rating on the 'gender' attribute as they will be all men. However, if the 3 women are in different groups they will have been distributed as well as they possibly could have been, so the 'overall' rating for 'gender' will be good. If you hold the mouse over one of the blue circles in the lower table a window will pop up showing you the makeup of the selected group on that particular attribute. This does not work on the top row of the table (showing overall diversity).


Context title

with the reporting page, this page operates in the context of a particular list (file) and group name. To report on a different group name, or create a new set of groups, click on the 'Group name' hyperlink in the top right hand corner of the page. To work with a different file entirely, click on the 'List' hyperlink.

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