taxes Property Tax Assistance

2019 Confidence Interval Detail

Montgomery County
170-904/Willis ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 667,315,180 0.9458 705,556,333 48 5351 0.012611809
A 821,284,750 0.9661 850,103,250 48 3970 0.021120212
A 751,187,960 0.9917 757,475,003 49 2286 0.012621123
A 766,868,535 0.9716 789,284,206 50 1183 0.020886305
E 214,477,233 0.8920 240,445,328 15 905 0.183879222
F1 94,144,834 0.8946 105,236,792 9 284 0.090236363
F1 95,620,000 0.8762 109,130,336 9 99 0.073225410
F1 90,731,950 1.0495 86,452,549 8 34 0.018625866
F1 77,216,210 0.9318 82,867,794 6 12 0.041666276
L1 51,632,725 0.8638 59,773,935 10 310 0.014945602
L1 54,365,701 0.9565 56,838,161 13 46 0.020197632
L1 36,666,152 1.0485 34,970,102 5 8 0.022651892
L1 39,210,258 0.8430 46,511,000 2 3 0.008118119
Random Totals: 3,760,721,488 3,924,644,789 272 14,491
CATG D1 EXCEPTION VALUES: 21,952,697 21,810,441
Total Test Values(1) 3,782,674,185 3,946,455,230

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 197,322,762

Confidence Interval Values(5)

Local Test Value: 3,782,674,185 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 3,749,132,468 (State Test Value minus Margin of Error Percent)
State Upper Limit: 4,143,777,992 (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