taxes Property Tax

School and Appraisal Districts Property Value Study 2015 Report

2015 Confidence Interval Detail
210/Shelby
210-901/Center ISD

Category Summary

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

Stratum
Variance
A 35,698,581 0.9122 39,134,599 7 1,038 .022032978
A 36,570,701 0.9357 39,083,789 8 531 .013520977
A 37,245,801 0.9912 37,576,474 9 320 .007304272
A 37,695,130 0.9995 37,713,987 8 181 .014967031
E 87,998,094 1.0343 85,079,855 12 1,226 .012650585
F1 26,107,640 0.9677 26,979,064 10 277 .010056885
F1 27,057,890 0.9653 28,030,550 10 110 .000886963
F1 24,390,190 0.9717 25,100,535 8 40 .004176612
F1 26,042,590 0.9141 28,489,870 6 13 .031226943
G1 16,724,743 0.9638 17,352,919 10 72 .082507312
G1 17,350,390 0.9924 17,483,263 6 17 .046834985
G1 17,967,500 1.0460 17,177,342 3 4 .001476873
L1 10,787,798 1.0164 10,613,733 11 197 .018351584
L1 9,201,040 1.1171 8,236,541 9 40 .014515439
L1 9,466,540 1.0939 8,653,935 6 18 .064989910
Random Totals: 420,304,628   426,706,456 123 4,084  
Catg J Exception Values: 3,460,230   3,458,502      
Catg D1 Exception Values: 18,379,231   18,220,353      
Catg G1 Exception Values: 13,315,763   13,228,194      
Catg L1 Exception Values: 12,605,450   12,353,861      
Total Test Values (4): 468,065,302   473,967,366      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 23,698,368

Confidence Interval Values (5)

State Lower Limit: 450,268,998 (State Test Value minus Margin of Error Percent)
Local Test Value: 468,065,302 (Within Confidence Interval)
State Upper Limit: 497,665,734 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 577,700,667 (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