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2008 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 19,361,800 0.8266 23,423,421 11 983 .569467354
A 20,275,320 1.0663 19,014,649 14 416 .072503327
A 19,729,540 0.9846 20,038,127 10 244 .016903503
A 28,254,200 1.0618 26,609,719 10 215 .011542911
D3 9,185,250 1.0134 9,063,795 18 1,539 .019896147
F1 4,448,250 0.8846 5,028,544 7 169 .001197284
F1 4,359,590 0.9212 4,732,512 7 37 .009048399
F1 5,630,750 1.0184 5,529,016 6 15 .002666666
F1 6,291,130 0.9518 6,609,718 3 6 .007168185
G1 6,631,300 1.0334 6,416,973 5 13 .002754775
L1 4,426,820 0.9531 4,644,654 6 75 .014135817
L1 4,011,740 0.9866 4,066,227 5 16 .000070273
L1 9,383,350 0.9962 9,419,143 4 10 .000353072
Random Totals: 141,989,040   144,596,498 106 3,738  
Catg J Exception Values: 10,047,930   9,641,339      
Catg D1 Exception Values: 25,307,206   23,184,777      
Catg G1 Exception Values: 17,599,560   16,799,580      
Total Test Values (4): 194,943,736   194,222,194      

Margin of Error

Margin of Error Percent: 5.7422644
Margin of Error Value: 11,152,752

Confidence Interval Values (5)

State Lower Limit: 183,069,442 (State Test Value minus Margin of Error Percent)
Local Test Value: 194,943,736 (Within Confidence Interval)
State Upper Limit: 205,374,946 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 208,985,058 (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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