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2009 Confidence Interval Detail
101/Harris
101-914/Katy ISD

Category Summary

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

Stratum
Variance
A 1,878,071,260 0.9804 1,915,617,360 76 17,240 .024864518
A 1,419,328,774 0.9865 1,438,751,925 55 9,947 .015693518
A 1,551,526,406 0.9718 1,596,549,090 76 8,171 .010745322
A 1,757,374,457 0.9469 1,855,924,023 55 4,984 .015809811
B 164,204,854 1.0050 163,387,914 5 24 .000957805
B 117,675,176 0.9748 120,717,251 4 8 .001208228
B 193,113,640 1.0404 185,614,802 4 9 .006646331
B 161,668,745 0.9989 161,846,776 3 6 .000986898
C 43,316,073 1.0311 42,009,575 7 1,054 .001163352
C 65,002,667 0.9879 65,798,833 9 226 .011515412
C 70,368,580 0.8661 81,247,639 7 68 .020950350
C 100,288,864 1.0530 95,241,086 5 24 .003239874
D3 251,358,315 1.0000 251,358,315 20 702 .008680934
F1 788,438,223 0.9123 864,231,309 15 567 .034006711
F1 893,240,786 0.9587 931,720,857 15 145 .003874554
F1 785,384,466 0.9615 816,832,518 15 36 .002524093
L1 209,920,410 0.9235 227,309,594 8 1,271 .017338780
L1 213,093,189 0.9213 231,296,200 8 136 .002291328
L1 202,841,728 0.9389 216,041,887 6 24 .016949252
Random Totals: 10,866,216,613   11,261,496,954 393 44,642  
Catg D1 Exception Values: 13,310,460   4,753,559      
Catg F1 Exception Values: 639,115,080   626,775,000      
Catg L1 Exception Values: 166,970,068   186,801,204      
Total Test Values (4): 11,685,612,221   12,079,826,717      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 603,991,336

Confidence Interval Values (5)

State Lower Limit: 11,475,835,381 (State Test Value minus Margin of Error Percent)
Local Test Value: 11,685,612,221 (Within Confidence Interval)
State Upper Limit: 12,683,818,053 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 12,068,368,092 (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

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