If You Think This Market Is Boring…, from Kim Zussman
…and taxes too low, just wait:
Compared SP500 monthly returns since 1950 under Democratic and Republican presidents (from inaugurations in January). Turns out under Dems stocks do a little better, but not significantly:
Two-sample T for Dem ret vs Rep ret
N Mean St Dev SE Mean
Dem ret 685 0.0073 0.0408 0.0016 T=0.51
Rep ret 410 0.0060 0.0429 0.0021
Notice the standard deviation is a little lower for the party of redistribution, so maybe their appeal is less volatility?
Test for Equal Variances: Dem ret, Rep ret
95% Bonferroni confidence intervals for standard deviations
N Lower St Dev Upper
Dem ret 685 0.038 0.041 0.043
Rep ret 410 0.040 0.043 0.047
F-Test (normal distribution) Test statistic = 0.90, p-value = 0.252
Depending on your definition of what "is" is (as well as significance of DNA on children's clothing), Dems do have slightly lower market volatility (N.S.) as well as possibly better skills subduing the mistress.