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 |
2002532 |
2412 |
- |
2436 |
= |
-24 |
* |
(272 |
/ |
1747) |
= |
-3.73669145 |
4 |
2002535 |
2449 |
- |
2485 |
= |
-36 |
* |
(284 |
/ |
1747) |
= |
-5.85231826 |
5 |
2002536 |
2486 |
- |
2528 |
= |
-42 |
* |
(275 |
/ |
1747) |
= |
-6.61133369 |
6 |
2002539 |
2478 |
- |
2552 |
= |
-74 |
* |
(293 |
/ |
1747) |
= |
-12.41099022 |
7 |
2002540 |
2496 |
- |
2567 |
= |
-71 |
* |
(307 |
/ |
1747) |
= |
-12.47681736 |
8 |
2002543 |
2514 |
- |
2586 |
= |
-72 |
* |
(316 |
/ |
1747) |
= |
-13.02346879 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Mountain View Elementary
|
-54 |
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 |
61578 |
2425 |
- |
2436 |
= |
-11 |
* |
(285 |
/ |
1724) |
= |
-1.81844548 |
4 |
61580 |
2455 |
- |
2485 |
= |
-30 |
* |
(275 |
/ |
1724) |
= |
-4.78538283 |
5 |
61583 |
2478 |
- |
2528 |
= |
-50 |
* |
(280 |
/ |
1724) |
= |
-8.12064965 |
6 |
61585 |
2488 |
- |
2552 |
= |
-64 |
* |
(278 |
/ |
1724) |
= |
-10.3201856 |
7 |
61586 |
2502 |
- |
2567 |
= |
-65 |
* |
(302 |
/ |
1724) |
= |
-11.38631085 |
8 |
61589 |
2537 |
- |
2586 |
= |
-49 |
* |
(304 |
/ |
1724) |
= |
-8.64037119 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Mountain View Elementary
|
-45 |
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 |
63358 |
2415 |
- |
2436 |
= |
-21 |
* |
(264 |
/ |
1715) |
= |
-3.23265306 |
4 |
63361 |
2454 |
- |
2485 |
= |
-31 |
* |
(292 |
/ |
1715) |
= |
-5.27813409 |
5 |
63363 |
2490 |
- |
2528 |
= |
-38 |
* |
(274 |
/ |
1715) |
= |
-6.07113699 |
6 |
63365 |
2475 |
- |
2552 |
= |
-77 |
* |
(288 |
/ |
1715) |
= |
-12.93061223 |
7 |
63367 |
2511 |
- |
2567 |
= |
-56 |
* |
(288 |
/ |
1715) |
= |
-9.40408162 |
8 |
63369 |
2513 |
- |
2586 |
= |
-73 |
* |
(309 |
/ |
1715) |
= |
-13.15276967 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Mountain View Elementary
|
-50 |
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 |
63459 |
2416 |
- |
2436 |
= |
-20 |
* |
(268 |
/ |
1692) |
= |
-3.16784868 |
4 |
63462 |
2460 |
- |
2485 |
= |
-25 |
* |
(265 |
/ |
1692) |
= |
-3.91548463 |
5 |
63463 |
2484 |
- |
2528 |
= |
-44 |
* |
(289 |
/ |
1692) |
= |
-7.51536641 |
6 |
63466 |
2498 |
- |
2552 |
= |
-54 |
* |
(267 |
/ |
1692) |
= |
-8.52127657 |
7 |
63468 |
2502 |
- |
2567 |
= |
-65 |
* |
(309 |
/ |
1692) |
= |
-11.87056735 |
8 |
63470 |
2538 |
- |
2586 |
= |
-48 |
* |
(294 |
/ |
1692) |
= |
-8.34042552 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Mountain View Elementary
|
-43 |
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 |
63718 |
2425 |
- |
2436 |
= |
-11 |
* |
(267 |
/ |
1701) |
= |
-1.72663139 |
4 |
63719 |
2479 |
- |
2485 |
= |
-6 |
* |
(272 |
/ |
1701) |
= |
-0.95943562 |
5 |
63720 |
2481 |
- |
2528 |
= |
-47 |
* |
(264 |
/ |
1701) |
= |
-7.29453259 |
6 |
63721 |
2506 |
- |
2552 |
= |
-46 |
* |
(295 |
/ |
1701) |
= |
-7.97766017 |
7 |
63722 |
2519 |
- |
2567 |
= |
-48 |
* |
(279 |
/ |
1701) |
= |
-7.87301587 |
8 |
63723 |
2533 |
- |
2586 |
= |
-53 |
* |
(324 |
/ |
1701) |
= |
-10.09523807 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Mountain View Elementary
|
-36 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-54
|
-45
|
-50
|
-43
|
-36
|
-228.0 |
-45.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -27.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -63.6
For the lines, you have the data necessary to plot the chart.