taxes Property Tax

School and Appraisal Districts Property Value Study 2015 Report

2015 Confidence Interval Detail
220/Tarrant
220-919/Carroll ISD

Category Summary

(1)
Category
(1)
Local
Value
(1)
Stratum
Ratio
(1)
State
Value
(2)
Sample
Size
(3)
Total
Parcels

Stratum
Variance
A 1,065,155,195 0.8824 1,207,111,508 100 2,853 .014100203
A 1,108,180,290 0.8969 1,235,567,276 100 2,118 .014037755
A 1,385,953,528 0.9359 1,480,877,795 99 2,027 .013120002
A 1,360,901,285 0.9183 1,481,978,967 86 1,171 .024136325
F1 249,922,779 0.9064 275,731,221 9 186 .022133869
F1 263,023,867 0.9027 291,374,617 8 50 .005013645
F1 272,723,972 0.9250 294,836,726 3 6 .000270779
L1 44,463,586 0.9852 45,131,533 10 229 .004965748
L1 56,191,390 1.0026 56,045,671 10 47 .005985093
L1 71,879,170 1.0276 69,948,589 5 12 .025128913
L1 41,511,305 1.0738 38,658,321 2 2 .017219857
Random Totals: 5,919,906,367   6,477,262,224 432 8,701  
Catg D1 Exception Values: 130,888   63,270      
Catg F1 Exception Values: 65,773,424   71,585,078      
Total Test Values (4): 5,985,810,679   6,548,910,572      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 327,445,528

Confidence Interval Values (5)

Local Test Value: 5,985,810,679 (Outside Confidence Interval)
State Lower Limit: 6,221,465,044 (State Test Value minus Margin of Error Percent)
State Upper Limit: 6,876,356,100 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 6,287,210,118 (See ISD Summary Worksheet)

Sources:
(1) See Stratified Category Worksheet Reports PTS236, PTS430
(2) Number of parcels sampled by staff
(3) Total Category Parcels from Stratification Report, Appraisal Roll, or Self-report
(4) Includes any parcels in A, B, C, D3, F1, G1, G2, or L1 marked as exception properties
(5) Unstudied categories and sub-categories were not included in the Confidence Interval Values
(6) Includes local value of unstudied property categories and sub-categories