2010 Confidence Interval Detail
246/Williamson
246-914/Coupland ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 3,792,369 | 0.9594 | 3,952,855 | 9 | 61 | .014653533 |
| A | 3,762,867 | 0.9776 | 3,849,087 | 8 | 39 | .009445019 |
| A | 4,831,790 | 0.9496 | 5,088,237 | 8 | 35 | .007222238 |
| A | 3,994,801 | 0.9895 | 4,037,192 | 6 | 16 | .005836133 |
| D3 | 23,610,962 | 0.9778 | 24,147,026 | 27 | 796 | .013722388 |
| Random Totals: | 39,992,789 | 41,074,397 | 58 | 947 | ||
| Catg J Exception Values: | 4,442,205 | 4,385,055 | ||||
| Catg D1 Exception Values: | 6,119,621 | 5,247,314 | ||||
| Total Test Values (4): | 50,554,615 | 50,706,766 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 2,535,338 |
Confidence Interval Values (5)
| State Lower Limit: | 48,171,428 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 50,554,615 | (Within Confidence Interval) |
| State Upper Limit: | 53,242,104 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 51,553,368 | (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