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School and Appraisal Districts Property Value Study 2014 Report

2014 Confidence Interval Detail
090/Gray
090-902/Lefors ISD

Category Summary

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

Stratum
Variance
G1 33,291,960 0.9682 34,385,416 15 61 .028834266
G1 33,648,860 1.0434 32,249,243 13 17 .039180225
G1 37,275,380 1.0524 35,419,403 7 8 .006865442
Random Totals: 104,216,200   102,054,062 35 86  
Catg D1 Exception Values: 3,431,610   3,401,009      
Catg G1 Exception Values: 25,887,870   26,111,202      
Total Test Values (4): 133,535,680   131,566,273      

Margin of Error

Margin of Error Percent: 5.0000003
Margin of Error Value: 6,578,314

Confidence Interval Values (5)

State Lower Limit: 124,987,959 (State Test Value minus Margin of Error Percent)
Local Test Value: 133,535,680 (Within Confidence Interval)
State Upper Limit: 138,144,587 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 192,556,163 (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