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2006 Confidence Interval Detail
188/Potter
188-901/Amarillo ISD

Category Summary

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

Stratum
Variance
A 1,131,574,950 0.9804 1,154,197,215 45 18,639 .028740480
A 1,131,696,202 0.9871 1,146,485,870 48 11,138 .010062864
A 1,131,557,421 0.9937 1,138,731,429 46 7,816 .005359086
A 1,131,170,934 0.9237 1,224,608,568 48 4,024 .048153216
B 62,704,753 0.9826 63,815,136 37 910 .017721588
B 64,509,694 1.0030 64,316,744 7 141 .000328770
B 64,125,179 0.9847 65,121,539 6 18 .002090189
B 59,234,374 0.9801 60,437,072 4 9 .001845020
F1 273,311,553 0.9597 284,788,531 31 1,782 .046953315
F1 273,683,344 0.8250 331,737,387 7 424 .252216758
F1 274,851,599 0.9628 285,471,125 6 130 .259032424
F1 270,903,983 0.9855 274,889,886 6 30 .002416428
L1 190,056,895 0.9520 199,639,596 7 2,058 .010924677
L1 190,134,123 0.9839 193,245,374 7 377 .002596317
L1 190,391,788 0.9606 198,200,904 7 106 .018506156
L1 188,714,259 1.0052 187,738,021 5 17 .000078783
Random Totals: 6,628,621,051   6,873,424,397 317 47,619  
Catg D1 Exception Values: 508,102   581,991      
Total Test Values (4): 6,629,129,153   6,874,006,388      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 343,700,319

Confidence Interval Values (5)

State Lower Limit: 6,530,306,069 (State Test Value minus Margin of Error Percent)
Local Test Value: 6,629,129,153 (Within Confidence Interval)
State Upper Limit: 7,217,706,707 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 6,211,693,554 (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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