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 |
2925181 |
2418 |
- |
2436 |
= |
-18 |
* |
(54 |
/ |
387) |
= |
-2.51162789 |
4 |
2925184 |
2444 |
- |
2485 |
= |
-41 |
* |
(75 |
/ |
387) |
= |
-7.94573641 |
5 |
2925185 |
2455 |
- |
2528 |
= |
-73 |
* |
(64 |
/ |
387) |
= |
-12.07235142 |
6 |
2925188 |
2483 |
- |
2552 |
= |
-69 |
* |
(73 |
/ |
387) |
= |
-13.01550381 |
7 |
2925189 |
2515 |
- |
2567 |
= |
-52 |
* |
(61 |
/ |
387) |
= |
-8.19638243 |
8 |
2925192 |
2568 |
- |
2586 |
= |
-18 |
* |
(60 |
/ |
387) |
= |
-2.79069766 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Chatom Union
|
-47 |
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 |
89534 |
2414 |
- |
2436 |
= |
-22 |
* |
(62 |
/ |
393) |
= |
-3.47073791 |
4 |
89536 |
2444 |
- |
2485 |
= |
-41 |
* |
(57 |
/ |
393) |
= |
-5.94656485 |
5 |
89537 |
2453 |
- |
2528 |
= |
-75 |
* |
(73 |
/ |
393) |
= |
-13.9312977 |
6 |
89540 |
2471 |
- |
2552 |
= |
-81 |
* |
(64 |
/ |
393) |
= |
-13.19083963 |
7 |
89542 |
2495 |
- |
2567 |
= |
-72 |
* |
(75 |
/ |
393) |
= |
-13.74045797 |
8 |
89543 |
2552 |
- |
2586 |
= |
-34 |
* |
(62 |
/ |
393) |
= |
-5.36386768 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Chatom Union
|
-56 |
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 |
92142 |
2415 |
- |
2436 |
= |
-21 |
* |
(63 |
/ |
385) |
= |
-3.43636362 |
4 |
92143 |
2438 |
- |
2485 |
= |
-47 |
* |
(63 |
/ |
385) |
= |
-7.69090906 |
5 |
92146 |
2465 |
- |
2528 |
= |
-63 |
* |
(53 |
/ |
385) |
= |
-8.67272723 |
6 |
92148 |
2469 |
- |
2552 |
= |
-83 |
* |
(69 |
/ |
385) |
= |
-14.87532466 |
7 |
92150 |
2477 |
- |
2567 |
= |
-90 |
* |
(62 |
/ |
385) |
= |
-14.49350649 |
8 |
92151 |
2538 |
- |
2586 |
= |
-48 |
* |
(75 |
/ |
385) |
= |
-9.35064931 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Chatom Union
|
-59 |
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 |
92341 |
2435 |
- |
2436 |
= |
-1 |
* |
(65 |
/ |
365) |
= |
-0.17808219 |
4 |
92342 |
2453 |
- |
2485 |
= |
-32 |
* |
(65 |
/ |
365) |
= |
-5.69863011 |
5 |
92345 |
2469 |
- |
2528 |
= |
-59 |
* |
(59 |
/ |
365) |
= |
-9.53698627 |
6 |
92346 |
2502 |
- |
2552 |
= |
-50 |
* |
(52 |
/ |
365) |
= |
-7.12328765 |
7 |
92348 |
2490 |
- |
2567 |
= |
-77 |
* |
(67 |
/ |
365) |
= |
-14.13424651 |
8 |
92351 |
2562 |
- |
2586 |
= |
-24 |
* |
(57 |
/ |
365) |
= |
-3.74794519 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Chatom Union
|
-40 |
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 |
92976 |
2420 |
- |
2436 |
= |
-16 |
* |
(57 |
/ |
385) |
= |
-2.36883117 |
4 |
92977 |
2461 |
- |
2485 |
= |
-24 |
* |
(69 |
/ |
385) |
= |
-4.3012987 |
5 |
92978 |
2468 |
- |
2528 |
= |
-60 |
* |
(66 |
/ |
385) |
= |
-10.28571426 |
6 |
92979 |
2494 |
- |
2552 |
= |
-58 |
* |
(65 |
/ |
385) |
= |
-9.79220774 |
7 |
92980 |
2516 |
- |
2567 |
= |
-51 |
* |
(55 |
/ |
385) |
= |
-7.28571424 |
8 |
92981 |
2539 |
- |
2586 |
= |
-47 |
* |
(73 |
/ |
385) |
= |
-8.91168828 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Chatom Union
|
-43 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-47
|
-56
|
-59
|
-40
|
-43
|
-245.0 |
-49.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -25.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -73.0
For the lines, you have the data necessary to plot the chart.