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2010 Confidence Interval Detail
139/Lamar
139-912/Prairiland ISD

Category Summary

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

Stratum
Variance
A 15,477,320 0.9032 17,136,094 15 489 .041407139
A 14,766,680 0.9965 14,818,545 15 266 .008546532
A 15,876,300 0.9271 17,124,690 16 199 .032347247
A 15,567,130 0.9672 16,095,048 14 118 .013377676
D3 76,133,410 1.0055 75,716,967 20 4,158 .104506423
Random Totals: 137,820,840   140,891,344 80 5,230  
Catg J Exception Values: 12,134,239   12,193,309      
Catg D1 Exception Values: 11,905,792   9,427,009      
Total Test Values (4): 161,860,871   162,511,662      

Margin of Error

Margin of Error Percent: 6.8701383
Margin of Error Value: 11,164,776

Confidence Interval Values (5)

State Lower Limit: 151,346,886 (State Test Value minus Margin of Error Percent)
Local Test Value: 161,860,871 (Within Confidence Interval)
State Upper Limit: 173,676,438 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 185,531,028 (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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