What is the rationale for partial grouping used for this dashboard? How different is the partial grouping from the grouping of countries for the Human Development Index?
Life-course gender gap dashboard allows grouping of countries by each indicator, thus partially, contrary to a complete grouping by a hypothetical composite measure, which combines all listed indicators after making them commensurable. A good example of a complete grouping is the grouping of countries into four human development groups by the Human Development Index (HDI). Alternatively, one can group countries by each component indicator of the HDI and have four partial groupings. The complete grouping by a composite index depends on the way the component indicators are combined. The partial grouping does not require any assumption on normalization, weighting or the functional form of the composite index. The partial grouping may depend on the predefined values considered as thresholds needed for grouping, such as what is considered a good performance or as a target to be achieved.
Life-course gender gap dashboard is not using predefined thresholds or target values. Countries are divided according to the value of each indicator into three groups of approximately equal sizes (terciles). Thus there is the top third, the middle third and the bottom third of countries. We are not suggesting nor are we using any norms about gender equality, we are simply observing distributions and are using their tercile values. For details about partial grouping in this table, see Technical note 6 at http://hdr.undp.org/sites/default/files/hdr2016_technical_notes.pdf