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2009 Confidence Interval Detail
105/Hays
105-904/Dripping Springs ISD

Category Summary

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

Stratum
Variance
A 489,965,614 0.9851 497,376,524 63 2,215 .004153675
A 477,499,402 0.9796 487,443,244 55 1,550 .008654034
A 466,173,964 0.9712 479,997,904 46 1,213 .004842850
A 444,413,525 0.9589 463,461,805 19 831 .010075374
C 59,771,143 0.9259 64,554,642 7 1,465 .030808390
C 33,491,710 1.0106 33,140,422 7 459 .004421714
C 53,902,590 0.8390 64,246,234 7 518 .181253773
C 40,539,350 1.0293 39,385,359 7 171 .043776060
D3 316,836,270 0.9566 331,210,820 15 3,306 .002690930
Random Totals: 2,382,593,568   2,460,816,954 226 11,728  
Catg D1 Exception Values: 7,016,928   6,838,282      
Total Test Values (4): 2,389,610,496   2,467,655,236      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 123,382,762

Confidence Interval Values (5)

State Lower Limit: 2,344,272,474 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,389,610,496 (Within Confidence Interval)
State Upper Limit: 2,591,037,998 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,532,073,972 (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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