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2007 Confidence Interval Detail
140/Lamb
140-904/Littlefield ISD

Category Summary

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

Stratum
Variance
A 20,473,119 1.1157 18,350,022 8 1,037 .128055912
A 20,440,597 0.9424 21,689,937 10 441 .050316577
A 20,438,351 0.8785 23,265,055 9 258 .011391714
A 20,419,084 0.8552 23,876,384 10 160 .014450307
D3 9,027,290 0.9940 9,081,781 17 1,535 .029025121
F1 4,468,692 0.8710 5,130,530 10 169 .162410455
F1 4,468,273 0.9599 4,654,936 8 37 .039061885
F1 4,658,077 0.9563 4,870,937 4 12 .002737414
F1 3,973,735 0.9477 4,193,030 3 4 .000491359
G1 6,238,200 1.0993 5,674,702 5 13 .015049733
L1 4,438,013 0.9495 4,674,053 7 93 .045284042
L1 4,370,655 0.9918 4,406,791 7 23 .004745531
L1 4,827,055 1.0360 4,659,319 3 8 .000585306
Random Totals: 128,241,141   134,527,477 101 3,790  
Catg J Exception Values: 9,887,110   10,403,309      
Catg D1 Exception Values: 19,090,079   17,782,342      
Catg G1 Exception Values: 13,406,020   13,941,592      
Catg L1 Exception Values: 5,368,413   5,184,125      
Total Test Values (4): 175,992,763   181,838,845      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 9,091,942

Confidence Interval Values (5)

State Lower Limit: 172,746,903 (State Test Value minus Margin of Error Percent)
Local Test Value: 175,992,763 (Within Confidence Interval)
State Upper Limit: 190,930,787 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 192,111,513 (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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