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220/Tarrant
2017 Confidence Interval Detail
220/Tarrant
061-911/Northwest ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 757,894,150 | 0.9396 | 806,613,612 | 118 | 4,414 | .006479709 |
| A | 992,085,556 | 0.9277 | 1,069,403,424 | 85 | 4,519 | .008911048 |
| A | 871,873,983 | 0.9387 | 928,810,038 | 83 | 2,993 | .008521557 |
| A | 1,125,130,596 | 0.9866 | 1,140,412,118 | 66 | 2,577 | .024315243 |
| F1 | 320,157,301 | 0.9275 | 345,183,074 | 9 | 177 | .025650802 |
| F1 | 296,364,302 | 0.9517 | 311,405,172 | 10 | 31 | .008154561 |
| F1 | 268,160,150 | 0.9833 | 272,714,482 | 6 | 17 | .000570823 |
| F1 | 509,079,080 | 0.9312 | 546,691,452 | 4 | 8 | .013247804 |
| L1 | 384,880,679 | 1.0266 | 374,908,123 | 12 | 57 | .005218637 |
| L1 | 386,928,901 | 1.0228 | 378,303,579 | 7 | 13 | .001717797 |
| L1 | 984,008,811 | 1.0061 | 978,042,750 | 3 | 7 | .000017220 |
| Random Totals: | 6,896,563,509 | 7,152,487,824 | 403 | 14,813 | ||
| Catg D1 Exception Values: | 1,521,084 | 940,665 | ||||
| Catg L1 Exception Values: | 582,024,127 | 582,024,127 | ||||
| Total Test Values (4): | 7,480,108,720 | 7,735,452,616 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 386,772,630 |
Confidence Interval Values (5)
| State Lower Limit: | 7,348,679,986 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 7,480,108,720 | (Within Confidence Interval) |
| State Upper Limit: | 8,122,225,246 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 6,647,632,019 | (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, 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
(6) Includes local value of unstudied property categories and sub-categories