taxes Property Tax Assistance

2017 Confidence Interval Detail

187/Polk
187-901/Big Sandy ISD

Category Summary

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

Stratum
Variance
A 9,451,257 0.9694 9,749,595 13 259 .043992210
A 9,141,462 0.9595 9,527,318 11 131 .013678456
A 10,529,463 1.0023 10,505,301 9 100 .019677127
A 12,042,456 1.0388 11,592,661 9 67 .004003260
E 24,618,718 1.0687 23,036,135 20 386 .170110655
G1 37,630,220 0.9736 38,650,596 15 29 .017168022
G1 39,091,470 1.0065 38,839,016 8 9 .002325455
Random Totals: 142,505,046   141,900,622 85 981  
Catg J Exception Values: 4,060,380   3,254,070      
Catg D1 Exception Values: 20,089,349   20,787,482      
Catg G1 Exception Values: 71,546,580   73,039,951      
Total Test Values (4): 238,201,355   238,982,125      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 11,949,106

Confidence Interval Values (5)

State Lower Limit: 227,033,019 (State Test Value minus Margin of Error Percent)
Local Test Value: 238,201,355 (Within Confidence Interval)
State Upper Limit: 250,931,231 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 266,952,889 (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