2007 Confidence Interval Detail
070/Ellis
070-908/Midlothian ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 365,657,276 | 0.9607 | 380,615,464 | 12 | 2,858 | .014179743 |
| A | 365,506,595 | 0.9046 | 404,053,278 | 8 | 2,026 | .035454040 |
| A | 365,720,783 | 0.8930 | 409,541,750 | 7 | 1,483 | .013131409 |
| A | 365,239,187 | 1.0147 | 359,947,952 | 8 | 943 | .007792170 |
| D3 | 98,614,326 | 0.9343 | 105,548,888 | 10 | 2,181 | .023056898 |
| Random Totals: | 1,560,738,167 | 1,659,707,332 | 45 | 9,491 | ||
| Catg D1 Exception Values: | 4,716,983 | 3,764,715 | ||||
| Total Test Values (4): | 1,565,455,150 | 1,663,472,047 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 83,173,602 |
Confidence Interval Values (5)
| Local Test Value: | 1,565,455,150 | (Outside Confidence Interval) |
|---|---|---|
| State Lower Limit: | 1,580,298,445 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 1,746,645,649 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 2,291,000,891 | (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