taxes Property Tax

School and Appraisal Districts Property Value Study 2015 Report

2015 Confidence Interval Detail
050/Coryell
050-904/Oglesby ISD

Category Summary

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

Stratum
Variance
A 3,495,430 0.8729 4,004,388 9 87 .007250867
A 3,955,490 0.9088 4,352,432 9 66 .067515625
A 3,561,450 0.8600 4,141,221 7 41 .106238409
A 4,135,480 0.8273 4,998,767 8 30 .041061469
E 19,021,820 0.7676 24,780,902 10 217 .071925899
F1 488,460 1.0340 472,398 6 16 .004686747
Random Totals: 34,658,130   42,750,108 49 457  
Catg D1 Exception Values: 3,943,041   4,976,989      
Catg F1 Exception Values: 6,000,000   6,000,000      
Total Test Values (4): 44,601,171   53,727,097      

Margin of Error

Margin of Error Percent: 8.0941727
Margin of Error Value: 4,348,764

Confidence Interval Values (5)

Local Test Value: 44,601,171 (Outside Confidence Interval)
State Lower Limit: 49,378,333 (State Test Value minus Margin of Error Percent)
State Upper Limit: 58,075,861 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 53,271,903 (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