2009 Confidence Interval Detail
101/Harris
101-920/Spring Branch ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 3,214,259,559 | 0.9596 | 3,349,582,700 | 75 | 17,680 | .026257564 |
| A | 3,659,758,043 | 0.9348 | 3,915,017,162 | 78 | 8,059 | .018408764 |
| A | 3,669,314,918 | 0.9290 | 3,949,746,952 | 75 | 3,968 | .011991352 |
| A | 3,862,965,926 | 0.9744 | 3,964,456,000 | 72 | 1,894 | .016907249 |
| B | 195,187,403 | 0.9957 | 196,030,333 | 6 | 89 | .001401613 |
| B | 138,951,857 | 1.0103 | 137,535,244 | 6 | 25 | .003973886 |
| B | 192,107,388 | 0.9956 | 192,956,396 | 5 | 20 | .003413868 |
| B | 245,569,080 | 0.9883 | 248,476,252 | 3 | 9 | .003912671 |
| C | 74,606,059 | 0.8680 | 85,951,681 | 7 | 348 | .039693343 |
| C | 77,529,933 | 0.9180 | 84,455,265 | 10 | 107 | .018405338 |
| C | 67,611,323 | 0.9953 | 67,930,597 | 6 | 50 | .003811454 |
| C | 108,721,847 | 0.9720 | 111,853,752 | 5 | 28 | .001549443 |
| F1 | 954,155,987 | 0.8160 | 1,169,308,808 | 7 | 856 | .111057524 |
| F1 | 913,495,729 | 0.8806 | 1,037,356,040 | 8 | 199 | .125983270 |
| F1 | 1,006,984,903 | 1.0605 | 949,537,862 | 7 | 78 | .028832233 |
| F1 | 1,043,299,628 | 0.9555 | 1,091,888,674 | 5 | 25 | .000905900 |
| L1 | 271,368,634 | 0.8944 | 303,408,580 | 7 | 2,313 | .005779022 |
| L1 | 277,621,859 | 0.9931 | 279,550,759 | 7 | 346 | .001319848 |
| L1 | 295,951,975 | 0.9344 | 316,729,425 | 8 | 111 | .004167901 |
| L1 | 279,133,946 | 0.9706 | 287,589,064 | 6 | 31 | .012157715 |
| Random Totals: | 20,548,595,997 | 21,739,361,546 | 403 | 36,236 | ||
| Catg D1 Exception Values: | 368,161 | 366,356 | ||||
| Total Test Values (4): | 20,548,964,158 | 21,739,727,902 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 1,086,986,395 |
Confidence Interval Values (5)
| Local Test Value: | 20,548,964,158 | (Outside Confidence Interval) |
|---|---|---|
| State Lower Limit: | 20,652,741,507 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 22,826,714,297 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 19,380,891,418 | (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