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2011 Confidence Interval Detail
220/Tarrant
220-910/Lake Worth ISD

Category Summary

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

Stratum
Variance
A 58,766,362 1.0156 57,863,688 13 1,117 .094849685
A 62,264,396 1.0205 61,013,617 22 762 .007593984
A 58,855,646 1.0034 58,656,215 18 563 .019559750
A 60,568,468 1.0296 58,827,183 16 433 .007312792
B 27,522,773 0.9390 29,310,727 8 20 .020337660
B 36,170,963 0.8512 42,494,082 2 5 .000149706
F1 58,010,342 0.8726 66,479,879 9 101 .016141133
F1 65,751,278 0.8890 73,960,943 8 38 .025143691
F1 61,347,559 0.8681 70,668,770 6 13 .001321222
F1 58,414,445 0.8858 65,945,411 3 5 .005767773
G1 56,777,414 0.9916 57,258,384 11 43 .003102890
L1 17,647,794 1.1374 15,515,908 9 144 .037924924
L1 14,586,713 1.0398 14,028,383 8 28 .005884846
L1 36,364,493 1.0223 35,571,254 7 15 .001267481
Random Totals: 673,048,646   707,594,444 140 3,287  
Catg D1 Exception Values: 40,103   27,146      
Total Test Values (4): 673,088,749   707,621,590      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 35,381,080

Confidence Interval Values (5)

State Lower Limit: 672,240,510 (State Test Value minus Margin of Error Percent)
Local Test Value: 673,088,749 (Within Confidence Interval)
State Upper Limit: 743,002,670 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 700,386,468 (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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