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2007 Confidence Interval Detail
092/Gregg
092-907/Spring Hill ISD

Category Summary

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

Stratum
Variance
A 76,883,484 0.9518 80,776,932 30 678 .019421727
A 76,907,421 0.9896 77,715,664 56 466 .008257168
A 76,722,743 0.9901 77,489,893 44 317 .005160132
A 76,603,736 0.9950 76,988,679 25 197 .009456694
B 4,875,615 0.8710 5,597,721 10 81 .023568687
B 4,766,629 0.8671 5,497,208 8 62 .047519068
B 4,802,133 1.0255 4,682,724 9 49 .015776097
B 4,790,994 0.9743 4,917,370 8 28 .005544717
G1 8,363,340 0.9684 8,636,245 6 66 .076297128
G1 8,227,540 1.0301 7,987,127 6 28 .007079348
G1 8,309,770 1.0038 8,278,312 5 16 .000497259
G1 8,245,781 0.9699 8,501,682 4 10 .020442069
Random Totals: 359,499,186   367,069,557 211 1,998  
Catg D1 Exception Values: 226,180   187,678      
Total Test Values (4): 359,725,366   367,257,235      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 18,362,862

Confidence Interval Values (5)

State Lower Limit: 348,894,373 (State Test Value minus Margin of Error Percent)
Local Test Value: 359,725,366 (Within Confidence Interval)
State Upper Limit: 385,620,097 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 379,805,799 (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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