taxes Property Tax

School and Appraisal Districts Property Value Study 2015 Report

2015 Confidence Interval Detail
022/Brewster
022-902/Marathon ISD

Category Summary

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

Stratum
Variance
A 3,909,031 0.9618 4,064,287 10 109 .049584507
A 4,407,952 1.0223 4,311,799 10 70 .019920445
A 5,478,749 1.0222 5,359,762 9 58 .015017577
A 7,104,273 1.0001 7,103,563 8 42 .016113829
E 11,693,821 1.0332 11,318,061 13 516 .000378598
Random Totals: 32,593,826   32,157,472 50 795  
Catg J Exception Values: 27,822,500   28,107,707      
Catg D1 Exception Values: 15,692,294   12,511,179      
Total Test Values (4): 76,108,620   72,776,358      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 3,638,817

Confidence Interval Values (5)

State Lower Limit: 69,137,541 (State Test Value minus Margin of Error Percent)
Local Test Value: 76,108,620 (Within Confidence Interval)
State Upper Limit: 76,415,175 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 82,758,025 (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