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 |
3045950 |
2446 |
- |
2436 |
= |
10 |
* |
(47 |
/ |
266) |
= |
1.76691729 |
4 |
3045953 |
2452 |
- |
2485 |
= |
-33 |
* |
(44 |
/ |
266) |
= |
-5.45864659 |
5 |
3045954 |
2455 |
- |
2528 |
= |
-73 |
* |
(40 |
/ |
266) |
= |
-10.97744355 |
6 |
3045957 |
2463 |
- |
2552 |
= |
-89 |
* |
(48 |
/ |
266) |
= |
-16.0601503 |
7 |
3045958 |
2492 |
- |
2567 |
= |
-75 |
* |
(39 |
/ |
266) |
= |
-10.99624058 |
8 |
3045961 |
2516 |
- |
2586 |
= |
-70 |
* |
(48 |
/ |
266) |
= |
-12.63157889 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Rockford 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 |
93679 |
2411 |
- |
2436 |
= |
-25 |
* |
(41 |
/ |
243) |
= |
-4.21810698 |
4 |
93681 |
2479 |
- |
2485 |
= |
-6 |
* |
(47 |
/ |
243) |
= |
-1.16049382 |
5 |
93684 |
2470 |
- |
2528 |
= |
-58 |
* |
(39 |
/ |
243) |
= |
-9.30864197 |
6 |
93685 |
2485 |
- |
2552 |
= |
-67 |
* |
(41 |
/ |
243) |
= |
-11.30452669 |
7 |
93687 |
2484 |
- |
2567 |
= |
-83 |
* |
(36 |
/ |
243) |
= |
-12.29629628 |
8 |
93690 |
2505 |
- |
2586 |
= |
-81 |
* |
(39 |
/ |
243) |
= |
-12.99999999 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Rockford Elementary
|
-51 |
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 |
96444 |
2416 |
- |
2436 |
= |
-20 |
* |
(40 |
/ |
240) |
= |
-3.33333332 |
4 |
96445 |
2452 |
- |
2485 |
= |
-33 |
* |
(35 |
/ |
240) |
= |
-4.81249999 |
5 |
96447 |
2484 |
- |
2528 |
= |
-44 |
* |
(49 |
/ |
240) |
= |
-8.9833333 |
6 |
96450 |
2475 |
- |
2552 |
= |
-77 |
* |
(41 |
/ |
240) |
= |
-13.15416664 |
7 |
96452 |
2507 |
- |
2567 |
= |
-60 |
* |
(38 |
/ |
240) |
= |
-9.49999998 |
8 |
96453 |
2498 |
- |
2586 |
= |
-88 |
* |
(37 |
/ |
240) |
= |
-13.56666661 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Rockford Elementary
|
-53 |
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 |
96628 |
2425 |
- |
2436 |
= |
-11 |
* |
(43 |
/ |
246) |
= |
-1.92276422 |
4 |
96631 |
2470 |
- |
2485 |
= |
-15 |
* |
(38 |
/ |
246) |
= |
-2.31707316 |
5 |
96632 |
2488 |
- |
2528 |
= |
-40 |
* |
(38 |
/ |
246) |
= |
-6.17886176 |
6 |
96635 |
2507 |
- |
2552 |
= |
-45 |
* |
(48 |
/ |
246) |
= |
-8.7804878 |
7 |
96636 |
2489 |
- |
2567 |
= |
-78 |
* |
(38 |
/ |
246) |
= |
-12.04878043 |
8 |
96639 |
2506 |
- |
2586 |
= |
-80 |
* |
(41 |
/ |
246) |
= |
-13.33333328 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Rockford Elementary
|
-45 |
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 |
97305 |
2413 |
- |
2436 |
= |
-23 |
* |
(40 |
/ |
233) |
= |
-3.94849784 |
4 |
97306 |
2485 |
- |
2485 |
= |
0 |
* |
(39 |
/ |
233) |
= |
0.0 |
5 |
97307 |
2506 |
- |
2528 |
= |
-22 |
* |
(38 |
/ |
233) |
= |
-3.58798282 |
6 |
97308 |
2514 |
- |
2552 |
= |
-38 |
* |
(33 |
/ |
233) |
= |
-5.38197424 |
7 |
97309 |
2520 |
- |
2567 |
= |
-47 |
* |
(45 |
/ |
233) |
= |
-9.07725321 |
8 |
97310 |
2485 |
- |
2586 |
= |
-101 |
* |
(38 |
/ |
233) |
= |
-16.47210293 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Rockford Elementary
|
-38 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-54
|
-51
|
-53
|
-45
|
-38
|
-241.0 |
-48.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -30.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -66.2
For the lines, you have the data necessary to plot the chart.