U.S. Bureau of Economic Analysis
Billions of Chained 2012 Dollars, Seasonally Adjusted Annual Rate
Disposable income measures the total income remaining after deduction of taxes & other mandatory charges. This is used to indicate American's financial health and predict consumer behavior and economic growth.
The data shows autocorrection and a non-normal distribution. The data should be differenced. While the Order Norm transformation, provides the best normality, the Yeo Johnson variable will also perform well.
Data is able to be distributed by time but not by geography. The roll up method used is Sum.
Auto Correction Function
Auto Correlation Function After Differencing
Partial Auto Correlation Function
Seasonal and Trend Decompostion
Data shows autocorrectation indicating a need for differencing
The ACF indicates 1 order differencing is appropriate.
Following first order differencing, no further differencing is required based on the differenced ACF at lag one of -0.10
The Kwiatkowski-Phillips-Schmidt-Shin (KPSS) test, KPSS Trend = 0.28 p-value = 0.01 indicates that the data is not stationary.
The Shapiro-Wilk test returned W = 0.93 with a p-value =0.00 indicating the data does not follow a normal distribution.
A skewness score of 0.19 indicates the data are fairly symmetrical.
Hartigan's dip test score of 0.05 with a p-value of 0.16 inidcates the data is unimodal
Statistics (Pearson P/ df, lower => more normal)
U.S. Bureau of Economic Analysis, Real Disposable Personal Income [DSPIC96], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/DSPIC96, December 15, 2019.