taxes Property Tax

School and Appraisal Districts Property Value Study 2013 Report

2013 Confidence Interval Detail
226/Tom Green
226-903/San Angelo ISD

Category Summary

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

Stratum
Variance
A 692,599,092 0.8635 802,083,488 59 11,099 .042828179
A 693,552,270 0.9220 752,225,889 60 6,281 .008538119
A 713,855,810 0.9601 743,522,352 59 4,393 .012855937
A 712,080,890 0.9245 770,233,521 60 2,399 .027612301
F1 154,196,960 0.9663 159,574,625 17 1,087 .010785142
F1 162,936,720 0.9666 168,566,853 10 295 .005974842
F1 165,374,610 0.6327 261,379,184 9 85 .165601027
F1 143,727,630 0.8181 175,684,672 7 21 .083465762
L1 93,550,440 1.0381 90,116,983 10 969 .009236929
L1 91,058,930 0.9811 92,813,098 10 201 .003074056
L1 112,960,600 0.9947 113,562,481 9 72 .008432484
L1 82,893,850 0.9773 84,819,247 6 13 .004414969
Random Totals: 3,818,787,802   4,214,582,393 316 26,915  
Catg D1 Exception Values: 7,748,360   8,803,194      
Total Test Values (4): 3,826,536,162   4,223,385,587      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 211,169,279

Confidence Interval Values (5)

Local Test Value: 3,826,536,162 (Outside Confidence Interval)
State Lower Limit: 4,012,216,308 (State Test Value minus Margin of Error Percent)
State Upper Limit: 4,434,554,866 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 3,869,227,850 (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