Haste still pays haste, and leisure answers leisure; http://bit.ly/1tkFetT
Like doth quit like, and Measure still for Measure (Shakespeare, 1623).
There are those who would have you believe that Shakespeare was writing about justice and morality and how everyone gets what they deserve in the end. But what if Shakespeare was really trying to teach us an important lesson about the statistical validity of measurement scales?
Measurement is about defining a unit of comparison. It makes assumptions about the nature of reality (the nature of justice, even) and so on but we’ll stick to the numbers here. Statisticians like to assign numbers to things so we can compare them, and validity has to do with whether a unit on a scale actually measures what it’s supposed to measure. If so, we can be confident in comparisons based on the scale. Reliability, a story for another day, is whether the measure works consistently.
http://bit.ly/1tkFetT
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