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 |
1395541 |
2418 |
- |
2436 |
= |
-18 |
* |
(22 |
/ |
116) |
= |
-3.4137931 |
4 |
1395542 |
2468 |
- |
2485 |
= |
-17 |
* |
(22 |
/ |
116) |
= |
-3.22413792 |
5 |
1395545 |
2472 |
- |
2528 |
= |
-56 |
* |
(24 |
/ |
116) |
= |
-11.58620686 |
6 |
1395546 |
2506 |
- |
2552 |
= |
-46 |
* |
(22 |
/ |
116) |
= |
-8.72413791 |
7 |
1395549 |
2563 |
- |
2567 |
= |
-4 |
* |
(11 |
/ |
116) |
= |
-0.37931034 |
8 |
1395550 |
2497 |
- |
2586 |
= |
-89 |
* |
(15 |
/ |
116) |
= |
-11.50862062 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Chicago Park Elementary
|
-39 |
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 |
43983 |
2408 |
- |
2436 |
= |
-28 |
* |
(18 |
/ |
115) |
= |
-4.38260869 |
4 |
43984 |
2469 |
- |
2485 |
= |
-16 |
* |
(20 |
/ |
115) |
= |
-2.78260869 |
5 |
43986 |
2474 |
- |
2528 |
= |
-54 |
* |
(23 |
/ |
115) |
= |
-10.8 |
6 |
43988 |
2492 |
- |
2552 |
= |
-60 |
* |
(23 |
/ |
115) |
= |
-12.0 |
7 |
43990 |
2560 |
- |
2567 |
= |
-7 |
* |
(19 |
/ |
115) |
= |
-1.15652174 |
8 |
43992 |
2546 |
- |
2586 |
= |
-40 |
* |
(12 |
/ |
115) |
= |
-4.17391304 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Chicago Park Elementary
|
-35 |
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 |
45051 |
2422 |
- |
2436 |
= |
-14 |
* |
(22 |
/ |
120) |
= |
-2.56666666 |
4 |
45054 |
2458 |
- |
2485 |
= |
-27 |
* |
(17 |
/ |
120) |
= |
-3.82499998 |
5 |
45056 |
2504 |
- |
2528 |
= |
-24 |
* |
(23 |
/ |
120) |
= |
-4.59999998 |
6 |
45057 |
2511 |
- |
2552 |
= |
-41 |
* |
(19 |
/ |
120) |
= |
-6.49166665 |
7 |
45060 |
2558 |
- |
2567 |
= |
-9 |
* |
(21 |
/ |
120) |
= |
-1.575 |
8 |
45062 |
2567 |
- |
2586 |
= |
-19 |
* |
(18 |
/ |
120) |
= |
-2.85 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Chicago Park Elementary
|
-22 |
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 |
45067 |
2433 |
- |
2436 |
= |
-3 |
* |
(16 |
/ |
124) |
= |
-0.38709677 |
4 |
45068 |
2469 |
- |
2485 |
= |
-16 |
* |
(19 |
/ |
124) |
= |
-2.4516129 |
5 |
45071 |
2559 |
- |
2528 |
= |
31 |
* |
(16 |
/ |
124) |
= |
4.0 |
6 |
45072 |
2516 |
- |
2552 |
= |
-36 |
* |
(27 |
/ |
124) |
= |
-7.83870966 |
7 |
45075 |
2504 |
- |
2567 |
= |
-63 |
* |
(21 |
/ |
124) |
= |
-10.66935479 |
8 |
45076 |
2542 |
- |
2586 |
= |
-44 |
* |
(25 |
/ |
124) |
= |
-8.87096773 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Chicago Park Elementary
|
-26 |
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 |
45199 |
2426 |
- |
2436 |
= |
-10 |
* |
(18 |
/ |
122) |
= |
-1.47540983 |
4 |
45200 |
2495 |
- |
2485 |
= |
10 |
* |
(21 |
/ |
122) |
= |
1.72131147 |
5 |
45201 |
2471 |
- |
2528 |
= |
-57 |
* |
(23 |
/ |
122) |
= |
-10.74590163 |
6 |
45202 |
2542 |
- |
2552 |
= |
-10 |
* |
(18 |
/ |
122) |
= |
-1.47540983 |
7 |
45203 |
2542 |
- |
2567 |
= |
-25 |
* |
(25 |
/ |
122) |
= |
-5.1229508 |
8 |
45204 |
2559 |
- |
2586 |
= |
-27 |
* |
(17 |
/ |
122) |
= |
-3.76229507 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Chicago Park Elementary
|
-21 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-39
|
-35
|
-22
|
-26
|
-21
|
-143.0 |
-28.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -4.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -52.6
For the lines, you have the data necessary to plot the chart.