Why One Is Fat in an Inflationary Universe, from Kim Zussman
Variation in US historical CPI has not been stable over the past 100 years. Using BLS data (1913-2010), compared mean monthly change in CPI for months prior to one's birth spasm (4/55) and after. Here is the comparison of mean monthly change in CPI before one (BK "0") and after one (AK "1")
Two-sample T for CPI:
BK AK N Mean StDev SE Mean
0 507 0.203 0.933 0.041 T=-2.58
1 665 0.315 0.354 0.014
Inflation has been significantly higher since one's random aggregation, consistent with the central bank's anti-deflationary bent and one's corpulent dint.
In addition, volatility of monthly CPI has been severely curtailed in the inflationary era:
Test for Equal Variances: CPI versus BK AK
95% Bonferroni confidence intervals for standard deviations
BK AK N Lower StDev Upper
0 507 0.8714 0.9329 1.003
1 665 0.3337 0.3543 0.377
F-Test (normal distribution)
Test statistic = 6.93, p-value = 0.000
Levene's Test (any continuous distribution)
Test statistic = 167.58, p-value = 0.000
