taxes Property Tax Assistance

2019 Confidence Interval Detail

Harris County
101-921/Tomball ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 1,665,758,466 0.9752 1,708,119,838 97 7804 0.006138572
A 2,013,252,301 0.9803 2,053,710,396 99 6696 0.007794875
A 1,838,472,519 0.9883 1,860,237,295 98 4309 0.006064793
A 1,865,533,031 0.9753 1,912,778,664 95 2143 0.009278516
B 64,253,966 0.8453 76,013,210 5 13 0.015403477
B 87,573,183 1.0129 86,457,876 4 6 0.003022609
B 81,396,234 1.0399 78,273,654 2 3 0.002567150
C1 125,014,746 0.7857 159,112,570 11 1681 0.086667758
C1 118,681,547 0.9675 122,668,266 11 458 0.020074291
C1 95,523,147 0.9985 95,666,647 9 122 0.016282307
C1 97,485,370 0.9655 100,968,793 8 50 0.005859276
F1 499,575,112 0.8049 620,667,303 19 519 0.304697802
F1 510,523,861 0.9151 557,888,603 12 134 0.018822306
F1 575,994,252 0.9012 639,141,425 9 41 0.002780775
F1 465,519,352 1.0077 461,962,243 4 5 0.015335415
L1 96,133,716 0.9489 101,310,692 10 836 0.008122631
L1 91,861,888 0.9934 92,472,205 9 122 0.002349899
L1 87,782,004 0.9626 91,192,608 7 23 0.001589103
L1 121,772,070 0.9861 123,488,312 4 6 0.000063207
Random Totals: 10,502,106,765 10,942,130,600 513 24,971
CATG D1 EXCEPTION VALUES: 4,117,147 4,043,586
Total Test Values(1) 10,506,223,912 10,946,174,186

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 547,308,709

Confidence Interval Values(5)

Local Test Value: 10,506,223,912 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 10,398,865,477 (State Test Value minus Margin of Error Percent)
State Upper Limit: 11,493,482,895 (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