taxes Property Tax Assistance

2016 Confidence Interval Detail

246/Williamson
246-912/Thrall ISD

Category Summary

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

Stratum
Variance
A 15,823,482 0.8396 18,846,453 10 245 .173100258
A 18,403,494 0.9014 20,416,568 9 160 .028364344
A 17,152,090 1.0447 16,418,197 9 98 .082988728
A 19,674,458 1.1542 17,045,970 8 65 .014813026
E 100,906,481 0.9419 107,130,779 17 953 .100181742
Random Totals: 171,960,005   179,857,967 53 1,521  
Catg J Exception Values: 7,954,133   8,744,506      
Catg D1 Exception Values: 27,992,224   28,918,629      
Total Test Values (4): 207,906,362   217,521,102      

Margin of Error

Margin of Error Percent: 8.0715539
Margin of Error Value: 17,557,333

Confidence Interval Values (5)

State Lower Limit: 199,963,769 (State Test Value minus Margin of Error Percent)
Local Test Value: 207,906,362 (Within Confidence Interval)
State Upper Limit: 235,078,435 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 211,989,293 (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