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Seasonal adjustment or deseasonalization is a statistical method for removing the seasonal component of a time series. It is usually done when wanting to analyse the trend, and cyclical deviations from trend, of a time series independently of the seasonal components.
The seasonally adjusted annual rate (SAAR) is a rate that is adjusted to take into account typical seasonal fluctuations in data and is expressed as an annual total. SAARs are used for data affected by seasonality, when it could be misleading to directly compare different times of the year.
X-13ARIMA-SEATS, successor to X-12-ARIMA and X-11, is a set of statistical methods for seasonal adjustment and other descriptive analysis of time series data that are implemented in the U.S. Census Bureau's software package. [3]
Seasonal adjustment involves factoring out seasonal patterns that can cause price variations, such as changing climatic conditions and holidays. Compared to a year ago, however, energy costs are ...
In time series data, seasonality refers to the trends that occur at specific regular intervals less than a year, such as weekly, monthly, or quarterly. Seasonality may be caused by various factors, such as weather, vacation, and holidays [1] and consists of periodic, repetitive, and generally regular and predictable patterns in the levels [2] of a time series.
This is an important technique for all types of time series analysis, especially for seasonal adjustment. [2] It seeks to construct, from an observed time series, a number of component series (that could be used to reconstruct the original by additions or multiplications) where each of these has a certain characteristic or type of behavior.
Excluding special items and mark-to-market fuel hedge adjustments, Air Group reported adjusted net income of $125 million and $625 million. ... all but one of those markets is seasonal. So again ...
Mar. 8—WILKES-BARRE — Pennsylvania's total non-farm jobs were up 14,800 over the month to a record high of 6,129,900 — the sixth consecutive record high for Pennsylvania's jobs count. Jobs ...