2010 Confidence Interval Detail
091/Grayson
091-901/Bells ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 18,123,563 | 0.9721 | 18,643,723 | 12 | 350 | .018720946 |
| A | 18,261,988 | 0.9583 | 19,056,650 | 11 | 193 | .017112480 |
| A | 18,889,895 | 1.0239 | 18,448,965 | 11 | 136 | .000622271 |
| A | 18,743,088 | 0.9648 | 19,426,915 | 11 | 91 | .012342826 |
| D3 | 49,639,736 | 0.9455 | 52,501,043 | 20 | 1,652 | .073638627 |
| Random Totals: | 123,658,270 | 128,077,296 | 65 | 2,422 | ||
| Catg J Exception Values: | 5,251,189 | 5,170,406 | ||||
| Catg D1 Exception Values: | 2,953,471 | 2,060,854 | ||||
| Total Test Values (4): | 131,862,930 | 135,308,556 |
Margin of Error
| Margin of Error Percent: | 5.0064410 |
|---|---|
| Margin of Error Value: | 6,774,143 |
Confidence Interval Values (5)
| State Lower Limit: | 128,534,413 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 131,862,930 | (Within Confidence Interval) |
| State Upper Limit: | 142,082,699 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 195,896,115 | (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