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 |
3045246 |
2372 |
- |
2436 |
= |
-64 |
* |
(80 |
/ |
421) |
= |
-12.16152013 |
4 |
3045249 |
2401 |
- |
2485 |
= |
-84 |
* |
(81 |
/ |
421) |
= |
-16.16152012 |
5 |
3045250 |
2418 |
- |
2528 |
= |
-110 |
* |
(68 |
/ |
421) |
= |
-17.7672209 |
6 |
3045253 |
2440 |
- |
2552 |
= |
-112 |
* |
(67 |
/ |
421) |
= |
-17.82422802 |
7 |
3045254 |
2423 |
- |
2567 |
= |
-144 |
* |
(67 |
/ |
421) |
= |
-22.91686459 |
8 |
3045257 |
2417 |
- |
2586 |
= |
-169 |
* |
(58 |
/ |
421) |
= |
-23.28266018 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Richgrove Elementary
|
-110 |
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 |
93651 |
2382 |
- |
2436 |
= |
-54 |
* |
(72 |
/ |
416) |
= |
-9.34615384 |
4 |
93654 |
2421 |
- |
2485 |
= |
-64 |
* |
(73 |
/ |
416) |
= |
-11.23076922 |
5 |
93656 |
2416 |
- |
2528 |
= |
-112 |
* |
(75 |
/ |
416) |
= |
-20.19230763 |
6 |
93658 |
2445 |
- |
2552 |
= |
-107 |
* |
(66 |
/ |
416) |
= |
-16.97596152 |
7 |
93659 |
2431 |
- |
2567 |
= |
-136 |
* |
(64 |
/ |
416) |
= |
-20.92307681 |
8 |
93661 |
2426 |
- |
2586 |
= |
-160 |
* |
(66 |
/ |
416) |
= |
-25.38461536 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Richgrove Elementary
|
-104 |
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 |
96415 |
2379 |
- |
2436 |
= |
-57 |
* |
(64 |
/ |
406) |
= |
-8.98522162 |
4 |
96418 |
2412 |
- |
2485 |
= |
-73 |
* |
(67 |
/ |
406) |
= |
-12.04679799 |
5 |
96420 |
2420 |
- |
2528 |
= |
-108 |
* |
(73 |
/ |
406) |
= |
-19.41871914 |
6 |
96422 |
2419 |
- |
2552 |
= |
-133 |
* |
(73 |
/ |
406) |
= |
-23.91379302 |
7 |
96423 |
2438 |
- |
2567 |
= |
-129 |
* |
(65 |
/ |
406) |
= |
-20.65270934 |
8 |
96426 |
2423 |
- |
2586 |
= |
-163 |
* |
(64 |
/ |
406) |
= |
-25.69458112 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Richgrove Elementary
|
-111 |
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 |
96600 |
2384 |
- |
2436 |
= |
-52 |
* |
(77 |
/ |
410) |
= |
-9.76585366 |
4 |
96603 |
2414 |
- |
2485 |
= |
-71 |
* |
(62 |
/ |
410) |
= |
-10.73658535 |
5 |
96604 |
2440 |
- |
2528 |
= |
-88 |
* |
(66 |
/ |
410) |
= |
-14.16585359 |
6 |
96607 |
2465 |
- |
2552 |
= |
-87 |
* |
(69 |
/ |
410) |
= |
-14.64146333 |
7 |
96608 |
2432 |
- |
2567 |
= |
-135 |
* |
(70 |
/ |
410) |
= |
-23.04878045 |
8 |
96611 |
2420 |
- |
2586 |
= |
-166 |
* |
(66 |
/ |
410) |
= |
-26.72195109 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Richgrove Elementary
|
-99 |
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 |
97273 |
2397 |
- |
2436 |
= |
-39 |
* |
(67 |
/ |
407) |
= |
-6.4201474 |
4 |
97274 |
2416 |
- |
2485 |
= |
-69 |
* |
(80 |
/ |
407) |
= |
-13.56265352 |
5 |
97275 |
2438 |
- |
2528 |
= |
-90 |
* |
(62 |
/ |
407) |
= |
-13.71007368 |
6 |
97276 |
2455 |
- |
2552 |
= |
-97 |
* |
(67 |
/ |
407) |
= |
-15.96805891 |
7 |
97277 |
2451 |
- |
2567 |
= |
-116 |
* |
(67 |
/ |
407) |
= |
-19.09582302 |
8 |
97278 |
2420 |
- |
2586 |
= |
-166 |
* |
(64 |
/ |
407) |
= |
-26.10319406 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Richgrove Elementary
|
-95 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-110
|
-104
|
-111
|
-99
|
-95
|
-519.0 |
-103.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -85.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -121.8
For the lines, you have the data necessary to plot the chart.