spop.q: State population, quarterly

In donboyd5/bdata: Boyd data

Description

State population, quarterly, 1900 through latest available annual year, plus 1 year. One row per state per quarter.

Forecasted and interpolated, based on the latest actual annual data (spop.a). The purpose of this is to have quarterly data that are plausible, for purposes of computing various measures that may be of interest (e.g., taxes per capita on a quarterly basis).

Includes same states and years as annual data, EXCEPT for Puerto Rico, where there are not enough data for forecasting and interpolation.

Annual data are forecast 2 years ahead via exponential smothing with multiplicative errors and a multiplicative trend. The data are then interpolated to quarterly using a spline function.

Usage

spop.q

Format

Data frame with postal abbreviation, date, value (thousands)

stabbr

State postal abbreviation, character

date

First day of quarter, date

value

State population, thousands, numeric

Source

Boyd forecast and interpolation of reported Census data. See source code on GitHub for details.

Examples

  spop.q

donboyd5/bdata documentation built on Jan. 16, 2022, 1:24 p.m.