Statistical proof (results that have a high probability of being influenced by something) requires many more observations than twelve. Strong statistical proof requires “all other being equal” to ensure other forces do not unduly influence the results. Moreover, they have the same problems with statistical proof as described above. However, investment professionals prefer quarterly data because they capture best the effects of quarterly economic and earnings reports. Here is how the “7” year quarterly returns look…John TobeyOnce again, the data show no support for a third quarter swooning market.

Source: Forbes August 14, 2017 20:00 UTC