(1) yt = αt + β x t + ε t
(2) yt = γ + δ x t + Γ z t + u t
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]]>From "'Created or saved' doesn't add up", by Joseph Lawler:
]]>...[t]he "created or saved" numbers are meaningless. The administration purposefully devised the metric to be nebulous. Without a counterfactual, showing the trend of unemployment in the absence of the stimulus, it is impossible to know how many jobs the stimulus saved.
]]>So a year later, in September 2009, after living through a year of "disaster," how did real consumption expenditure (one economists' favorite measures of living standards) compare to what it was in September 2008?
Today, we're fortunate to have Joe Gagnon, senior fellow at the Peterson Institute for International Economics, as a guest contributor.
]]>Revisions
We're all tempted to make predictions on the basis of the last data point. And even more difficult to resist is the temptation to make definitive statements on the basis of data that are sure to be revised. For instance, we see this question from Casey Mulligan, "Where's the GDP Disaster?".
]]>Last October, when we were told that spending and incomes were about to collapse, I predicted that "real GDP will not drop below $11 trillion (chained 2000 $)."