U.S. Bureau of Economic Analysis
Gross Domestic Product
Billions of Chained 2012 Dollars, Not Seasonally Adjusted
Real GDP describes the economic output of the entire US in each quarter. This is indicative of recessions, wages, & the employment situation.
The data shows autocorrection and seasonality. The data should be differenced and seasonally adjusted.
Data is able to be distributed by time but not by geography. The roll up method used is Sum.
Real GDP, Total US, Not Seas Adj
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.
Further differencing is reccommended
The Kwiatkowski-Phillips-Schmidt-Shin (KPSS) test, KPSS Trend = 0.03 p-value = 0.10 indicates that the data is stationary.
The Shapiro-Wilk test returned W = 0.97 with a p-value =0.39 indicating the data follows a normal distribution.
A skewness score of 0.16 indicates the data are fairly symmetrical.
Hartigan's dip test score of 0.03 with a p-value of 0.99 inidcates the data is unimodal
Statistics (Pearson P/ df, lower => more normal)
U.S. Bureau of Economic Analysis, Real Gross Domestic Product [ND000334Q], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/ND000334Q, December 19, 2019.