isixsigma on MSN1d
Standard Deviation: A Key Concept in Inferential Statistics
Ask someone to tell you how long their commute is, and they can probably provide an average number without much thought. But ...
Institute for Fiscal Studies5d
New data suggest dramatic decline in living standards, but it may just be the quality of the data that has declined
The latest official statistics on household incomes show dramatic falls, but there is reason to doubt their reliability.