Truck Transportation Employees - Not Seas Adj

Source:
U.S. Bureau of Labor Statistics

Release:
Employment Situation

Units:
Thousands of Persons, Seasonally Adjusted

Frequency:
Monthly

Available Through:
11/30/2021

Why Use:

Total employees in truck transportation measures the number of persons 16 years of age or older working in truck transportation positions in the US. This indicates population size and occupation opportunity.

Suggested Treatment:

The data shows autocorrection and seasonality. The data should be differenced and seasonally adjusted.

Grain Transformation:

Data is able to be distributed by time but not by geography. The roll up method used is Sum.

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Truck Transportation Employees - Not Seas Adj

Auto Correction Function

Auto Correlation Function After Differencing

Partial Auto Correlation Function

Seasonal Impact

Seasonal and Trend Decompostion

Autocorrectation Analysis:

Data shows autocorrectation indicating a need for differencing

The ACF indicates 1 order differencing is appropriate.

Further differencing is reccommended

Trend Analysis:

The Kwiatkowski-Phillips-Schmidt-Shin (KPSS) test, KPSS Trend = 0.20 p-value = 0.02 indicates that the data is not stationary.

Distribution Analysis:

The Shapiro-Wilk test returned W = 0.98 with a p-value =0.17 indicating the data follows a normal distribution.

A skewness score of -0.22 indicates the data are fairly symmetrical.

Hartigan's dip test score of 0.02 with a p-value of 0.98 inidcates the data is unimodal

Statistics (Pearson P/ df, lower => more normal)

No transform
1.04
Box-cox
NA
Log_b(x-a)
1.04
sqrt(x+a)
1.05
exp(x)
NA
arcsinh(x)
1.04
Yeo-Johnson
1.05
OrderNorm
1.42

Citation:

U.S. Bureau of Labor Statistics, All Employees: Transportation and Warehousing: Truck Transportation [CES4348400001], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/CEU4348400001, December 15, 2019.

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