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 |
2626621 |
2447 |
- |
2436 |
= |
11 |
* |
(367 |
/ |
2217) |
= |
1.82092918 |
4 |
2626622 |
2484 |
- |
2485 |
= |
-1 |
* |
(385 |
/ |
2217) |
= |
-0.1736581 |
5 |
2626625 |
2523 |
- |
2528 |
= |
-5 |
* |
(371 |
/ |
2217) |
= |
-0.83671628 |
6 |
2626626 |
2548 |
- |
2552 |
= |
-4 |
* |
(399 |
/ |
2217) |
= |
-0.71989174 |
7 |
2626629 |
2567 |
- |
2567 |
= |
0 |
* |
(354 |
/ |
2217) |
= |
0.0 |
8 |
2626630 |
2593 |
- |
2586 |
= |
7 |
* |
(341 |
/ |
2217) |
= |
1.07668019 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Cambrian
|
1 |
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 |
80129 |
2452 |
- |
2436 |
= |
16 |
* |
(348 |
/ |
2213) |
= |
2.51604157 |
4 |
80132 |
2484 |
- |
2485 |
= |
-1 |
* |
(362 |
/ |
2213) |
= |
-0.16357885 |
5 |
80133 |
2520 |
- |
2528 |
= |
-8 |
* |
(395 |
/ |
2213) |
= |
-1.42792589 |
6 |
80135 |
2559 |
- |
2552 |
= |
7 |
* |
(364 |
/ |
2213) |
= |
1.15137821 |
7 |
80138 |
2566 |
- |
2567 |
= |
-1 |
* |
(391 |
/ |
2213) |
= |
-0.17668324 |
8 |
80140 |
2599 |
- |
2586 |
= |
13 |
* |
(353 |
/ |
2213) |
= |
2.07365566 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Cambrian
|
4 |
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 |
82315 |
2462 |
- |
2436 |
= |
26 |
* |
(399 |
/ |
2318) |
= |
4.47540982 |
4 |
82317 |
2503 |
- |
2485 |
= |
18 |
* |
(352 |
/ |
2318) |
= |
2.73339085 |
5 |
82318 |
2510 |
- |
2528 |
= |
-18 |
* |
(372 |
/ |
2318) |
= |
-2.88869715 |
6 |
82321 |
2558 |
- |
2552 |
= |
6 |
* |
(414 |
/ |
2318) |
= |
1.07161346 |
7 |
82322 |
2584 |
- |
2567 |
= |
17 |
* |
(387 |
/ |
2318) |
= |
2.83822259 |
8 |
82324 |
2596 |
- |
2586 |
= |
10 |
* |
(394 |
/ |
2318) |
= |
1.69974115 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Cambrian
|
10 |
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 |
82518 |
2464 |
- |
2436 |
= |
28 |
* |
(356 |
/ |
2302) |
= |
4.3301477 |
4 |
82520 |
2518 |
- |
2485 |
= |
33 |
* |
(402 |
/ |
2302) |
= |
5.76281492 |
5 |
82522 |
2537 |
- |
2528 |
= |
9 |
* |
(358 |
/ |
2302) |
= |
1.39965247 |
6 |
82524 |
2549 |
- |
2552 |
= |
-3 |
* |
(383 |
/ |
2302) |
= |
-0.49913119 |
7 |
82526 |
2601 |
- |
2567 |
= |
34 |
* |
(410 |
/ |
2302) |
= |
6.0556038 |
8 |
82528 |
2626 |
- |
2586 |
= |
40 |
* |
(393 |
/ |
2302) |
= |
6.82884448 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Cambrian
|
24 |
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 |
83137 |
2477 |
- |
2436 |
= |
41 |
* |
(351 |
/ |
2211) |
= |
6.50881954 |
4 |
83138 |
2512 |
- |
2485 |
= |
27 |
* |
(337 |
/ |
2211) |
= |
4.11533241 |
5 |
83139 |
2542 |
- |
2528 |
= |
14 |
* |
(395 |
/ |
2211) |
= |
2.5011307 |
6 |
83140 |
2562 |
- |
2552 |
= |
10 |
* |
(356 |
/ |
2211) |
= |
1.61013116 |
7 |
83141 |
2592 |
- |
2567 |
= |
25 |
* |
(382 |
/ |
2211) |
= |
4.31931253 |
8 |
83142 |
2638 |
- |
2586 |
= |
52 |
* |
(390 |
/ |
2211) |
= |
9.1723202 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Cambrian
|
28 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
1
|
4
|
10
|
24
|
28
|
67.0 |
13.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 49.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -22.6
For the lines, you have the data necessary to plot the chart.