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2010 Confidence Interval Detail
139/Lamar
139-911/North Lamar ISD

Category Summary

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

Stratum
Variance
A 87,349,520 0.9515 91,801,913 11 1,447 .030671464
A 89,975,470 0.9628 93,451,880 17 939 .007703334
A 90,290,480 0.9706 93,025,428 12 641 .001267466
A 93,915,459 1.0146 92,564,024 11 382 .009675831
D3 201,916,420 0.9450 213,668,169 23 7,789 .019503184
F1 21,189,690 0.8318 25,474,501 9 175 .047782773
F1 20,555,470 0.8189 25,101,319 9 55 .030424190
F1 20,448,820 0.8885 23,014,992 7 17 .010682608
L1 11,569,880 0.9540 12,127,757 10 216 .006730201
L1 12,269,360 1.0210 12,017,003 8 51 .023611232
L1 9,105,160 0.9462 9,622,870 5 10 .002976604
Random Totals: 658,585,729   691,869,856 122 11,722  
Catg J Exception Values: 15,226,709   17,866,361      
Catg D1 Exception Values: 18,616,203   14,545,868      
Catg F1 Exception Values: 19,334,880   20,633,370      
Catg L1 Exception Values: 9,968,900   10,081,042      
Total Test Values (4): 721,732,421   754,996,497      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 37,749,825

Confidence Interval Values (5)

State Lower Limit: 717,246,672 (State Test Value minus Margin of Error Percent)
Local Test Value: 721,732,421 (Within Confidence Interval)
State Upper Limit: 792,746,322 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 882,783,701 (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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