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 |
1258380 |
2493 |
- |
2436 |
= |
57 |
* |
(43 |
/ |
234) |
= |
10.47435893 |
4 |
1258383 |
2490 |
- |
2485 |
= |
5 |
* |
(49 |
/ |
234) |
= |
1.04700855 |
5 |
1258384 |
2518 |
- |
2528 |
= |
-10 |
* |
(42 |
/ |
234) |
= |
-1.79487179 |
6 |
1258387 |
2596 |
- |
2552 |
= |
44 |
* |
(41 |
/ |
234) |
= |
7.7094017 |
7 |
1258388 |
2606 |
- |
2567 |
= |
39 |
* |
(23 |
/ |
234) |
= |
3.83333332 |
8 |
1258391 |
2625 |
- |
2586 |
= |
39 |
* |
(36 |
/ |
234) |
= |
5.99999997 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Ross Elementary
|
27 |
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 |
39229 |
2516 |
- |
2436 |
= |
80 |
* |
(46 |
/ |
248) |
= |
14.8387096 |
4 |
39231 |
2536 |
- |
2485 |
= |
51 |
* |
(42 |
/ |
248) |
= |
8.63709674 |
5 |
39232 |
2566 |
- |
2528 |
= |
38 |
* |
(54 |
/ |
248) |
= |
8.27419353 |
6 |
39235 |
2583 |
- |
2552 |
= |
31 |
* |
(42 |
/ |
248) |
= |
5.24999998 |
7 |
39236 |
2641 |
- |
2567 |
= |
74 |
* |
(42 |
/ |
248) |
= |
12.53225801 |
8 |
39238 |
2653 |
- |
2586 |
= |
67 |
* |
(22 |
/ |
248) |
= |
5.94354836 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Ross Elementary
|
55 |
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 |
40217 |
2520 |
- |
2436 |
= |
84 |
* |
(53 |
/ |
266) |
= |
16.73684208 |
4 |
40220 |
2544 |
- |
2485 |
= |
59 |
* |
(46 |
/ |
266) |
= |
10.20300747 |
5 |
40221 |
2585 |
- |
2528 |
= |
57 |
* |
(39 |
/ |
266) |
= |
8.35714284 |
6 |
40223 |
2604 |
- |
2552 |
= |
52 |
* |
(50 |
/ |
266) |
= |
9.77443605 |
7 |
40226 |
2601 |
- |
2567 |
= |
34 |
* |
(41 |
/ |
266) |
= |
5.24060149 |
8 |
40228 |
2632 |
- |
2586 |
= |
46 |
* |
(37 |
/ |
266) |
= |
6.39849622 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Ross Elementary
|
57 |
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 |
40242 |
2497 |
- |
2436 |
= |
61 |
* |
(39 |
/ |
265) |
= |
8.97735847 |
4 |
40245 |
2537 |
- |
2485 |
= |
52 |
* |
(56 |
/ |
265) |
= |
10.98867921 |
5 |
40246 |
2597 |
- |
2528 |
= |
69 |
* |
(45 |
/ |
265) |
= |
11.71698108 |
6 |
40249 |
2605 |
- |
2552 |
= |
53 |
* |
(37 |
/ |
265) |
= |
7.39999997 |
7 |
40250 |
2647 |
- |
2567 |
= |
80 |
* |
(47 |
/ |
265) |
= |
14.1886792 |
8 |
40253 |
2609 |
- |
2586 |
= |
23 |
* |
(41 |
/ |
265) |
= |
3.55849056 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Ross Elementary
|
57 |
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 |
40395 |
2510 |
- |
2436 |
= |
74 |
* |
(56 |
/ |
279) |
= |
14.85304653 |
4 |
40396 |
2523 |
- |
2485 |
= |
38 |
* |
(39 |
/ |
279) |
= |
5.31182795 |
5 |
40397 |
2586 |
- |
2528 |
= |
58 |
* |
(55 |
/ |
279) |
= |
11.43369173 |
6 |
40398 |
2619 |
- |
2552 |
= |
67 |
* |
(45 |
/ |
279) |
= |
10.80645157 |
7 |
40399 |
2614 |
- |
2567 |
= |
47 |
* |
(38 |
/ |
279) |
= |
6.40143365 |
8 |
40400 |
2651 |
- |
2586 |
= |
65 |
* |
(46 |
/ |
279) |
= |
10.71684582 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Ross Elementary
|
60 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
27
|
55
|
57
|
57
|
60
|
256.0 |
51.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 90.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 12.2
For the lines, you have the data necessary to plot the chart.