taxes Property Tax

School and Appraisal Districts Property Value Study 2014 Report

2014 Confidence Interval Detail
070/Ellis
070-901/Avalon ISD

Category Summary

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

Stratum
Variance
A 2,573,180 0.8344 3,083,869 9 62 .070251382
A 2,499,830 0.9525 2,624,493 8 35 .009472948
A 1,819,800 0.9891 1,839,854 7 18 .013395924
A 1,402,870 0.9325 1,504,418 5 7 .002695707
E 15,191,900 0.9176 16,556,125 14 255 .053372360
F1 509,430 0.9896 514,784 5 5 .004336103
Random Totals: 23,997,010   26,123,543 48 382  
Catg D1 Exception Values: 6,613,069   5,191,920      
Catg F1 Exception Values: 1,788,150   1,825,000      
Total Test Values (4): 32,398,229   33,140,463      

Margin of Error

Margin of Error Percent: 6.2649396
Margin of Error Value: 2,076,230

Confidence Interval Values (5)

State Lower Limit: 31,064,233 (State Test Value minus Margin of Error Percent)
Local Test Value: 32,398,229 (Within Confidence Interval)
State Upper Limit: 35,216,693 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 35,963,087 (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