taxes Property Tax

School and Appraisal Districts Property Value Study 2014 Report

2014 Confidence Interval Detail
156/Martin
156-905/Grady ISD

Category Summary

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

Stratum
Variance
G1 491,179,100 1.0289 477,382,739 14 289 .016151166
G1 493,782,949 1.0735 459,974,801 12 109 .031744936
G1 513,901,704 1.0340 497,003,582 10 41 .020463303
G1 464,017,369 1.0078 460,426,046 5 7 .003388778
Random Totals: 1,962,881,122   1,894,787,168 41 446  
Catg D1 Exception Values: 12,023,830   8,265,761      
Total Test Values (4): 1,974,904,952   1,903,052,929      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 95,152,646

Confidence Interval Values (5)

State Lower Limit: 1,807,900,283 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,974,904,952 (Within Confidence Interval)
State Upper Limit: 1,998,205,575 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,171,824,107 (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