Surprises in store for economists

Some analysts are shocked that US retail sales have declined. Have they lost their grasp of basic economic concepts?

Dean Baker
guardian.co.uk, Monday 14 June 2010 21.00 BST

The commerce department reported that retail sales in May were down by 1.2% from April. This surprised most economists who had expected a modest increase. The media were filled with accounts of economists trying to explain why consumers were still reluctant to open up their wallets and spend in a big way. It would have been much more interesting to hear accounts of why economists were surprised.

There is always a large random element in month-to-month movements in retail sales or any other economic variable. Therefore no one is ever going to be able to explain these changes with any precision. (The data are also subject to large revisions, so it is entirely possible that revised data will look very different from the report released last week (pdf).)