taxes Property Tax

School and Appraisal Districts Property Value Study 2015 Report

2015 Confidence Interval Detail
194/Red River
194-905/Detroit ISD

Category Summary

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

Stratum
Variance
A 4,917,403 0.8266 5,948,951 7 171 .040577340
A 5,054,764 0.9666 5,229,427 8 94 .033857886
A 4,736,404 0.9883 4,792,476 7 63 .035833162
A 5,273,114 0.9721 5,424,456 7 37 .035019194
D2 4,106,226 0.8360 4,911,754 10 259 .110873380
E 33,751,444 0.9654 34,961,098 10 572 .026976387
Random Totals: 57,839,355   61,268,162 49 1,196  
Catg D1 Exception Values: 12,602,842   12,743,563      
Total Test Values (4): 70,442,197   74,011,725      

Margin of Error

Margin of Error Percent: 5.4606537
Margin of Error Value: 4,041,524

Confidence Interval Values (5)

State Lower Limit: 69,970,201 (State Test Value minus Margin of Error Percent)
Local Test Value: 70,442,197 (Within Confidence Interval)
State Upper Limit: 78,053,249 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 60,861,111 (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