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2007 Confidence Interval Detail
246/Williamson
246-906/Hutto ISD

Category Summary

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

Stratum
Variance
A 193,935,577 0.9336 207,728,767 25 1,346 .005250572
A 193,871,119 0.9789 198,049,973 24 1,152 .002829645
A 193,896,989 1.0095 192,072,302 27 1,013 .005277013
A 193,776,074 1.0345 187,313,750 22 631 .012858856
D3 95,331,009 1.0088 94,499,414 15 1,349 .256530701
F1 32,723,038 0.9492 34,474,334 7 84 .002765968
F1 31,666,640 0.9957 31,803,395 7 28 .001048471
F1 34,999,368 1.0953 31,954,139 4 10 .009516642
L1 11,396,119 0.9044 12,600,751 7 93 .063662018
L1 13,434,163 0.9813 13,690,169 6 20 .001829382
Random Totals: 995,030,096   1,004,186,994 144 5,726  
Catg D1 Exception Values: 7,697,346   7,998,967      
Catg F1 Exception Values: 31,428,906   28,556,194      
Catg L1 Exception Values: 36,233,611   36,369,830      
Total Test Values (4): 1,070,389,959   1,077,111,985      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 53,855,599

Confidence Interval Values (5)

State Lower Limit: 1,023,256,386 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,070,389,959 (Within Confidence Interval)
State Upper Limit: 1,130,967,584 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,188,911,912 (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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