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2006 Confidence Interval Detail
227/Travis
227-904/Pflugerville ISD

Category Summary

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

Stratum
Variance
A 901,699,445 0.9791 920,947,242 58 7,597 .002155061
A 901,833,742 0.9744 925,527,239 58 6,252 .001649666
A 901,432,145 0.9899 910,629,503 61 5,270 .002192639
A 901,619,239 0.9879 912,662,455 55 4,047 .002490406
B 82,170,345 0.9657 85,088,894 13 247 .006092509
B 91,381,969 1.0280 88,892,966 4 8 .002119815
B 81,165,358 1.0485 77,410,928 3 4 .002604818
F1 250,780,712 0.9947 252,116,932 7 331 .024371906
F1 250,611,198 0.9376 267,290,100 6 83 .017004155
F1 252,006,534 0.9562 263,550,025 5 23 .015151595
F1 247,173,464 1.0170 243,041,754 4 9 .014011817
L1 176,109,890 0.9766 180,329,603 8 465 .022430884
L1 176,860,119 0.9753 181,339,197 7 62 .004270793
L1 183,736,417 0.9966 184,363,252 5 17 .000081733
Random Totals: 5,398,580,577   5,493,190,090 294 24,415  
Catg D1 Exception Values: 4,572,571   4,256,640      
Catg B Exception Values: 90,878,500   86,933,944      
Catg L1 Exception Values: 406,058,454   408,943,801      
Total Test Values (4): 5,900,090,102   5,993,324,475      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 299,666,224

Confidence Interval Values (5)

State Lower Limit: 5,693,658,251 (State Test Value minus Margin of Error Percent)
Local Test Value: 5,900,090,102 (Within Confidence Interval)
State Upper Limit: 6,292,990,699 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 5,915,220,526 (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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