taxes Property Tax Assistance

2016 Confidence Interval Detail

170/Montgomery
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 529,468,700 0.9458 559,810,425 99 4,737 .009336216
A 635,953,290 0.9832 646,819,864 99 3,370 .011307322
A 646,294,740 0.9784 660,562,899 100 2,116 .008632311
A 653,175,170 0.9802 666,369,282 34 1,051 .008437217
F1 70,548,573 1.0101 69,843,157 10 270 .007729839
F1 77,430,800 1.0121 76,505,088 11 97 .027649680
F1 65,009,990 1.0096 64,391,828 8 32 .003197861
F1 72,550,799 1.0444 69,466,487 6 15 .003421300
L1 39,996,230 1.0501 38,088,020 10 223 .040723023
L1 38,645,254 1.0203 37,876,364 8 33 .021940160
L1 34,523,710 1.0244 33,701,396 4 9 .001971317
Random Totals: 2,863,597,256   2,923,434,810 389 11,953  
Catg D1 Exception Values: 24,445,434   24,753,183      
Catg L1 Exception Values: 29,496,515   30,492,126      
Total Test Values (4): 2,917,539,205   2,978,680,119      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 148,934,005

Confidence Interval Values (5)

State Lower Limit: 2,829,746,114 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,917,539,205 (Within Confidence Interval)
State Upper Limit: 3,127,614,124 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 3,018,636,510 (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