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2008 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 71,954,130 0.9070 79,332,007 23 650 .055601589
A 83,492,040 1.0180 82,015,756 36 525 .005818423
A 89,334,080 0.9828 90,897,517 55 397 .006053322
A 96,423,800 0.9899 97,407,617 23 261 .005944046
G1 8,083,610 0.9432 8,570,409 7 63 .028048520
G1 8,404,560 0.9271 9,065,430 6 28 .054421247
G1 7,825,350 1.0347 7,562,917 5 15 .029599347
G1 7,945,250 1.0233 7,764,341 4 9 .041965788
Random Totals: 373,462,820   382,615,994 159 1,948  
Catg D1 Exception Values: 250,496   196,958      
Total Test Values (4): 373,713,316   382,812,952      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 19,140,648

Confidence Interval Values (5)

State Lower Limit: 363,672,304 (State Test Value minus Margin of Error Percent)
Local Test Value: 373,713,316 (Within Confidence Interval)
State Upper Limit: 401,953,600 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 418,339,877 (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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