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2011 Confidence Interval Detail
220/Tarrant
220-908/Mansfield ISD

Category Summary

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

Stratum
Variance
A 1,510,170,495 0.9914 1,523,270,622 50 12,784 .012778989
A 1,502,619,799 0.9791 1,534,694,923 50 9,609 .008647738
A 1,609,278,777 1.0068 1,598,409,592 50 7,934 .005087307
A 1,557,071,302 0.9882 1,575,664,139 50 4,799 .009858919
B 58,727,453 0.9962 58,951,469 13 617 .004158966
B 60,043,622 0.7479 80,282,955 8 61 .096657056
B 153,212,739 0.8391 182,591,752 6 9 .004399989
F1 230,652,465 0.8109 284,440,085 10 441 .110683829
F1 233,287,577 0.9367 249,052,607 9 165 .031683908
F1 244,750,395 0.8636 283,407,127 9 72 .030379090
F1 250,140,950 0.9583 261,025,723 7 19 .011514267
G1 136,755,979 1.0443 130,954,686 9 116 .018056817
G1 135,945,228 1.0005 135,877,289 9 64 .028283968
G1 136,482,729 1.0127 134,771,136 8 44 .002441150
G1 135,249,269 0.9952 135,901,597 7 26 .006693827
L1 76,985,432 1.0437 73,762,031 10 559 .011913693
L1 84,316,676 1.0148 83,086,989 9 128 .001352489
L1 76,289,022 1.0292 74,124,584 8 38 .000318449
L1 82,945,859 1.0066 82,402,006 6 14 .007122963
Random Totals: 8,274,925,768   8,482,671,312 328 37,499  
Catg D1 Exception Values: 924,087   729,289      
Catg L1 Exception Values: 121,575,072   121,575,072      
Total Test Values (4): 8,397,424,927   8,604,975,673      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 430,248,784

Confidence Interval Values (5)

State Lower Limit: 8,174,726,889 (State Test Value minus Margin of Error Percent)
Local Test Value: 8,397,424,927 (Within Confidence Interval)
State Upper Limit: 9,035,224,457 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 8,832,687,059 (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

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