taxes Property Tax Assistance

2018 Confidence Interval Detail

039/Clay
039-903/Petrolia CISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 17,089,790 0.7272 23,500,811 18 378 0.222482413
A 19,210,920 0.9238 20,795,540 14 218 0.037875351
A 16,924,760 0.9750 17,358,728 16 123 0.022879046
A 20,653,240 1.0313 20,026,413 14 96 0.004230216
E 32,345,900 0.7960 40,635,553 19 516 0.099525793
Random Totals: 106,224,610 122,317,045 81 1,331
CATG D1 EXCEPTION VALUES: 14,005,300 12,994,370
CATG J EXCEPTION VALUES: 13,413,470 14,075,323
Total Test Values(2) 133,643,380 149,386,738

Margin of Error

Margin of Error Percent: 5.3955104
Margin of Error Value: 8,060,177

Confidence Interval Values(5)

Local Test Value: 133,643,380 OUTSIDE CONFIDENCE INTERVAL
State Lower Limit: 141,326,561 (State Test Value minus Margin of Error Percent)
State Upper Limit: 157,446,915 (State Test Value plus Margin of Error Percent)

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