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Average Percentage Error
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Journal Article
Demography (2000) 37 (2): 193–201.
Published: 01 May 2000
...-R, a measure in the same scale as the original observations. We argue that MAPE-R is a more appropriate summary measure of average absolute percentage error when the guidelines indicate that MAPE is not valid. 12 1 2011 © Population Association of America 2000 2000 Root Mean Square...
Journal Article
Demography (1967) 4 (2): 850–858.
Published: 01 June 1967
... que ocurre este error y cuales son las distribuciones de las sumas de los porcentajes redondeados, para (1) un conjunto de datos empiricos; (2) la distribución polinomial en muestras pequeñas; (3) espaciamientos entre puntos ubicados en un intervalo, el modelo de la barra quebrada; y (4) para la...
Journal Article
Demography (2013) 50 (3): 827–852.
Published: 04 December 2012
... the forecast errors based on comparisons of the total number of households; average household size; percentage of households with one, two to three, and four or more persons and couple-households; total population size; percentages of children, elderly (aged 65 and older), and oldest-old (aged 80 and older...
FIGURES
Includes: Supplementary data
Journal Article
Demography (1996) 33 (4): 523–528.
Published: 01 November 1996
... and methods such as composite modeling may substantially improve forecast utility. 14 1 2011 © Population Association of America 1996 1996 Census Tract Forecast Error Mean Absolute Percentage Error Average Percentage Error Population Forecast References Costner H. ( 1965...
Journal Article
Demography (1980) 17 (3): 323–339.
Published: 01 August 1980
... in Table 1. The average absolute percentage error pro- vides a measure of the precision of each technique, while the average algebraic percentage error provides a measure of the bias. Table 1 shows overall precision to be quite similar for the FLA-REC, FLA-BP and SZ-BP techniques. All have overall average...
Journal Article
Demography (1988) 25 (3): 461–474.
Published: 01 August 1988
... Two measures were used to provide a general description of forecast error characteris- tics. Mean absolute percentage error (MAPE) is the average percentage error when the direction of error is ignored. This provides a measure of forecast accuracy. Mean algebraic percentage error (MALPE...
Journal Article
Demography (1978) 15 (4): 549–557.
Published: 01 November 1978
.... As mentioned earlier, if mortality is declining, the Brass technique will overestimate current mor- tality levels. The table shows the average absolute percentage error of the Brass es- timates of q(2), q(3), and q(5) for various fertility schedules and various rates of mortality change. There are three main...
Journal Article
Demography (1973) 10 (2): 137–160.
Published: 01 May 1973
... indicates Population Estimates for Local Areas 153 TABLE 4.-Average Percentage Errors of Regression Estimates, Using Two Symptomatic Indicators, and Standard Estimates, 1964-1967 Type of Estimate Years and Number of Strata 1964 1965 1966 1967 All Years More Rapid1y Growing Counties aRegression Estimates 2...
Journal Article
Demography (1991) 28 (2): 261–274.
Published: 01 May 1991
...) is the average error when the direction of the error is ignored. This provides a measure of accuracy. Mean algebraic percentage error (MALPE) is the average percentage error when the direction of the error is accounted for. This provides a measure of bias: a positive error indicates that forecasts tend to be too...
Image
Published: 28 January 2020
is Y = X , and the dashed lines are ±10%. Panels d, e, and f illustrate the percentage error against population size. The dashed lines represent errors of ±10%. Panels g, h, and i plot percentage errors against the year in which the population pyramid is observed. Panel j plots the distribution
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Journal Article
Demography (2002) 39 (4): 697–712.
Published: 01 November 2002
... were calculated by comparing PPH estimates with the actual PPH values reported in the decennial census. We used two error measures to evaluate the esti- mates. The mean absolute percentage error (MAPE) is the average error when the direc- tion of error is ignored. This is a measure of precision, or how...
Journal Article
Demography (1983) 20 (3): 407–413.
Published: 01 August 1983
... in Table 1 and FLA-COM in Table 2 shows that estimates of PPH are more precise and more stable than estimates of house- holds. Average absolute percentage er- rors and standard deviations are smaller for FLA-COM than for FLA-REC in every size-of-place category. For the to- tal sample, the average error...
Journal Article
Demography (2004) 41 (2): 303–314.
Published: 01 May 2004
... Control (CDC) announced that the prevalence of overweight in- creased to 61% in 1999, McKay (2002) noted that because the body-mass index (BMI) measures the percentage of body fat with error, overweight standards can misclassify lean, muscular persons as overweight.3 McKay (2002) also illustrated how...
Journal Article
Demography (2003) 40 (4): 741–757.
Published: 01 November 2003
... measures of the accuracy of forecasts. The mean absolute percentage error (MAPE) is the average when the direction of error is ignored. This is a measure of precision, or how close the projections were to census counts, regardless of whether they were too high or too low. The mean algebraic percentage...
Journal Article
Demography (2015) 52 (2): 455–483.
Published: 04 March 2015
... aged 12 to 18: Odds ratios, with robust standard errors shown in parentheses School Engagement Is High Ever Expelled/Suspended Model 1a Model 1b Model 2 Model 3 Model 1a Model 1b Model 2 Model 3 Average Monthly Income 1.153*** 1.032 1.139*** 1.021 0.589*** 0.796** 0.609...
Journal Article
Demography (2022) 59 (4): 1489–1516.
Published: 01 August 2022
... and the WLS participants' gender, Gender i . Because ED-level measures are not independent, all standard errors are clustered at the ED level. For continuous outcomes, we present clustered standard errors for regression estimates in brackets. For binary, count, and mortality outcomes, we present 95...
FIGURES
Includes: Supplementary data
Journal Article
Demography (2001) 38 (1): 115–132.
Published: 01 February 2001
... on consumption ex- penditures for every state of India. One possible interpreta- tion of this regularity is attenuation bias due to greater mea- surement error in consumption expenditures than in the as- set index. Error here is defined in relation to its use as a proxy for the relevant indicator of economic...
Journal Article
Demography (2019) 56 (1): 345–365.
Published: 03 January 2019
... who have their child prior to their expected graduation date are 5.4 percentage points less likely to have finished high school than the control group, a 7 % decrease relative to the mean for the teenage mothers in our sample. The mean is displayed below the standard error for each coefficient...
FIGURES
Includes: Supplementary data
Journal Article
Demography (2017) 54 (4): 1353–1373.
Published: 05 July 2017
... variable will be the municipality. We cluster the standard errors in the micro-level models using the region variable. We also include in the regressions a series of dummy variables indicating the region in which the family is located. Accordingly, we use only within-region and within-cohort variation...
FIGURES
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Includes: Supplementary data
Journal Article
Demography (1968) 5 (1): 475–484.
Published: 01 March 1968
... of errors, although here too there are substantially more positive than negative deviations. (3) Deviations are smaller when the average size of household is extrapolated than when the 1960 values are used. (4) When either building-permit or utility data were used, the average error in the estimate...
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