taxes Property Tax Assistance

2017 Confidence Interval Detail

072/Erath
072-903/Stephenville ISD

Category Summary

(1)
Category		 (1)
Local
Value		 (1)
Stratum
Ratio		 (1)
State
Value		 (2)
Sample
Size		 (3)
Total
Parcels
Stratum
Variance
A 151,769,720 0.9834 154,331,625 48 2,030 .008859941
A 161,798,290 0.9653 167,614,514 49 1,291 .006637250
A 177,975,130 0.9898 179,809,184 64 1,035 .003111561
A 184,681,180 0.9730 189,805,940 30 634 .004651190
B 28,783,990 0.8845 32,542,668 12 187 .047354265
B 30,553,630 0.9260 32,995,281 8 39 .013560673
B 50,692,060 0.9941 50,992,918 4 12 .002280031
E 275,945,980 0.9755 282,876,453 40 1,814 .011078208
F1 62,585,710 0.8602 72,757,161 13 346 .026825270
F1 61,751,210 0.8659 71,314,482 10 136 .042659356
F1 68,145,520 0.9790 69,607,273 8 64 .009757267
F1 72,436,190 0.8683 83,422,999 6 18 .027396110
L1 28,474,920 1.1812 24,106,773 11 376 .041580275
L1 26,599,570 1.0696 24,868,708 10 74 .014960974
L1 24,843,620 1.1024 22,535,940 6 27 .016821994
L1 28,918,020 1.0806 26,761,077 6 11 .033764195
Random Totals: 1,435,954,740   1,486,342,996 325 8,094  
Catg D1 Exception Values: 17,017,760   11,326,004      
Catg B Exception Values: 23,807,490   25,857,016      
Total Test Values (4): 1,476,779,990   1,523,526,016      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 76,176,300

Confidence Interval Values (5)

State Lower Limit: 1,447,349,716 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,476,779,990 (Within Confidence Interval)
State Upper Limit: 1,599,702,316 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,670,321,409 (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, D2, E, 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