Chico Country Day (Data source)
Source data for Chico Country Day
2015
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 3 | 142513 | 2463 | - | 2436 | = | 27 | * | (61 | / | 355) | = | 4.6394366 | ||
| 4 | 142516 | 2499 | - | 2485 | = | 14 | * | (60 | / | 355) | = | 2.36619718 | ||
| 5 | 142517 | 2495 | - | 2528 | = | -33 | * | (61 | / | 355) | = | -5.67042251 | ||
| 6 | 142520 | 2524 | - | 2552 | = | -28 | * | (59 | / | 355) | = | -4.65352112 | ||
| 7 | 142521 | 2538 | - | 2567 | = | -29 | * | (61 | / | 355) | = | -4.98309857 | ||
| 8 | 142524 | 2598 | - | 2586 | = | 12 | * | (53 | / | 355) | = | 1.79154929 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Chico Country Day | -7 | ||||||||||||
2016
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 3 | 4124 | 2469 | - | 2436 | = | 33 | * | (60 | / | 359) | = | 5.51532033 | ||
| 4 | 4125 | 2502 | - | 2485 | = | 17 | * | (60 | / | 359) | = | 2.84122562 | ||
| 5 | 4128 | 2527 | - | 2528 | = | -1 | * | (61 | / | 359) | = | -0.16991643 | ||
| 6 | 4129 | 2523 | - | 2552 | = | -29 | * | (62 | / | 359) | = | -5.00835652 | ||
| 7 | 4131 | 2556 | - | 2567 | = | -11 | * | (60 | / | 359) | = | -1.83844011 | ||
| 8 | 4133 | 2579 | - | 2586 | = | -7 | * | (56 | / | 359) | = | -1.091922 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Chico Country Day | 0 | ||||||||||||
2017
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 3 | 4197 | 2479 | - | 2436 | = | 43 | * | (62 | / | 365) | = | 7.30410956 | ||
| 4 | 4200 | 2493 | - | 2485 | = | 8 | * | (58 | / | 365) | = | 1.27123287 | ||
| 5 | 4201 | 2539 | - | 2528 | = | 11 | * | (61 | / | 365) | = | 1.83835616 | ||
| 6 | 4203 | 2567 | - | 2552 | = | 15 | * | (61 | / | 365) | = | 2.50684931 | ||
| 7 | 4206 | 2540 | - | 2567 | = | -27 | * | (62 | / | 365) | = | -4.58630135 | ||
| 8 | 4208 | 2568 | - | 2586 | = | -18 | * | (61 | / | 365) | = | -3.00821917 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Chico Country Day | 5 | ||||||||||||
2018
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 3 | 4200 | 2466 | - | 2436 | = | 30 | * | (60 | / | 367) | = | 4.90463214 | ||
| 4 | 4201 | 2513 | - | 2485 | = | 28 | * | (62 | / | 367) | = | 4.73024521 | ||
| 5 | 4204 | 2516 | - | 2528 | = | -12 | * | (61 | / | 367) | = | -1.99455041 | ||
| 6 | 4205 | 2556 | - | 2552 | = | 4 | * | (64 | / | 367) | = | 0.69754768 | ||
| 7 | 4208 | 2589 | - | 2567 | = | 22 | * | (59 | / | 367) | = | 3.53678472 | ||
| 8 | 4209 | 2579 | - | 2586 | = | -7 | * | (61 | / | 367) | = | -1.16348774 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Chico Country Day | 11 | ||||||||||||
2019
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 3 | 4256 | 2462 | - | 2436 | = | 26 | * | (62 | / | 367) | = | 4.39237055 | ||
| 4 | 4257 | 2512 | - | 2485 | = | 27 | * | (61 | / | 367) | = | 4.48773842 | ||
| 5 | 4258 | 2549 | - | 2528 | = | 21 | * | (62 | / | 367) | = | 3.54768391 | ||
| 6 | 4259 | 2537 | - | 2552 | = | -15 | * | (62 | / | 367) | = | -2.53405994 | ||
| 7 | 4260 | 2595 | - | 2567 | = | 28 | * | (64 | / | 367) | = | 4.88283376 | ||
| 8 | 4261 | 2595 | - | 2586 | = | 9 | * | (56 | / | 367) | = | 1.373297 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Chico Country Day | 16 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -7 | 0 | 5 | 11 | 16 | 25.0 | 5.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average:
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average:
For the lines, you have the data necessary to plot the chart.
Very last step
The percent of students getting a Free or Reduced Price Meal comes from the following sources:
| 2015 | 2016 | 2017 | 2018 | 2019 | |
|---|---|---|---|---|---|
| Percent | 18% | 20% | 18% | 21% | 22% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Chico Unified school district | County of Butte
THIS chart shows what the school system "wants"
PLUS a "special" or "outside" cause of variation: wealth/poverty.
NOT what teachers want.
NOT what principals want.
NOT what parents want.
