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 |
369317 |
2380 |
- |
2436 |
= |
-56 |
* |
(50 |
/ |
274) |
= |
-10.21897806 |
4 |
369318 |
2393 |
- |
2485 |
= |
-92 |
* |
(41 |
/ |
274) |
= |
-13.76642331 |
5 |
369321 |
2459 |
- |
2528 |
= |
-69 |
* |
(32 |
/ |
274) |
= |
-8.05839415 |
6 |
369322 |
2439 |
- |
2552 |
= |
-113 |
* |
(43 |
/ |
274) |
= |
-17.73357658 |
7 |
369325 |
2464 |
- |
2567 |
= |
-103 |
* |
(47 |
/ |
274) |
= |
-17.66788314 |
8 |
369326 |
2484 |
- |
2586 |
= |
-102 |
* |
(61 |
/ |
274) |
= |
-22.70802917 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Washington Colony Elementary
|
-90 |
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 |
11151 |
2390 |
- |
2436 |
= |
-46 |
* |
(45 |
/ |
262) |
= |
-7.90076335 |
4 |
11153 |
2418 |
- |
2485 |
= |
-67 |
* |
(48 |
/ |
262) |
= |
-12.2748091 |
5 |
11155 |
2420 |
- |
2528 |
= |
-108 |
* |
(42 |
/ |
262) |
= |
-17.31297704 |
6 |
11158 |
2488 |
- |
2552 |
= |
-64 |
* |
(35 |
/ |
262) |
= |
-8.5496183 |
7 |
11160 |
2490 |
- |
2567 |
= |
-77 |
* |
(46 |
/ |
262) |
= |
-13.51908396 |
8 |
11161 |
2554 |
- |
2586 |
= |
-32 |
* |
(46 |
/ |
262) |
= |
-5.61832061 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Washington Colony Elementary
|
-65 |
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 |
11482 |
2395 |
- |
2436 |
= |
-41 |
* |
(60 |
/ |
280) |
= |
-8.78571427 |
4 |
11483 |
2446 |
- |
2485 |
= |
-39 |
* |
(47 |
/ |
280) |
= |
-6.54642854 |
5 |
11485 |
2442 |
- |
2528 |
= |
-86 |
* |
(49 |
/ |
280) |
= |
-15.05 |
6 |
11487 |
2474 |
- |
2552 |
= |
-78 |
* |
(41 |
/ |
280) |
= |
-11.42142854 |
7 |
11489 |
2532 |
- |
2567 |
= |
-35 |
* |
(35 |
/ |
280) |
= |
-4.375 |
8 |
11491 |
2545 |
- |
2586 |
= |
-41 |
* |
(48 |
/ |
280) |
= |
-7.02857141 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Washington Colony 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 |
11518 |
2411 |
- |
2436 |
= |
-25 |
* |
(44 |
/ |
280) |
= |
-3.92857143 |
4 |
11519 |
2462 |
- |
2485 |
= |
-23 |
* |
(59 |
/ |
280) |
= |
-4.84642856 |
5 |
11522 |
2469 |
- |
2528 |
= |
-59 |
* |
(48 |
/ |
280) |
= |
-10.11428569 |
6 |
11523 |
2505 |
- |
2552 |
= |
-47 |
* |
(47 |
/ |
280) |
= |
-7.88928567 |
7 |
11526 |
2543 |
- |
2567 |
= |
-24 |
* |
(46 |
/ |
280) |
= |
-3.94285714 |
8 |
11527 |
2605 |
- |
2586 |
= |
19 |
* |
(36 |
/ |
280) |
= |
2.44285713 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Washington Colony Elementary
|
-28 |
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 |
11610 |
2388 |
- |
2436 |
= |
-48 |
* |
(49 |
/ |
306) |
= |
-7.68627446 |
4 |
11611 |
2496 |
- |
2485 |
= |
11 |
* |
(42 |
/ |
306) |
= |
1.50980391 |
5 |
11612 |
2444 |
- |
2528 |
= |
-84 |
* |
(66 |
/ |
306) |
= |
-18.11764702 |
6 |
11613 |
2524 |
- |
2552 |
= |
-28 |
* |
(53 |
/ |
306) |
= |
-4.84967319 |
7 |
11614 |
2546 |
- |
2567 |
= |
-21 |
* |
(51 |
/ |
306) |
= |
-3.49999999 |
8 |
11615 |
2567 |
- |
2586 |
= |
-19 |
* |
(45 |
/ |
306) |
= |
-2.79411764 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Washington Colony Elementary
|
-35 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-90
|
-65
|
-53
|
-28
|
-35
|
-271.0 |
-54.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 17.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -126.2
For the lines, you have the data necessary to plot the chart.