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 |
143658 |
2415 |
- |
2436 |
= |
-21 |
* |
(66 |
/ |
506) |
= |
-2.73913042 |
4 |
143659 |
2473 |
- |
2485 |
= |
-12 |
* |
(68 |
/ |
506) |
= |
-1.61264821 |
5 |
143662 |
2482 |
- |
2528 |
= |
-46 |
* |
(73 |
/ |
506) |
= |
-6.6363636 |
6 |
143663 |
2521 |
- |
2552 |
= |
-31 |
* |
(85 |
/ |
506) |
= |
-5.20750986 |
7 |
143666 |
2534 |
- |
2567 |
= |
-33 |
* |
(87 |
/ |
506) |
= |
-5.67391301 |
8 |
143667 |
2527 |
- |
2586 |
= |
-59 |
* |
(65 |
/ |
506) |
= |
-7.57905138 |
11 |
143670 |
2561 |
- |
2628 |
= |
-67 |
* |
(62 |
/ |
506) |
= |
-8.20948615 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Durham Unified
|
-38 |
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 |
4158 |
2426 |
- |
2436 |
= |
-10 |
* |
(71 |
/ |
535) |
= |
-1.3271028 |
4 |
4159 |
2494 |
- |
2485 |
= |
9 |
* |
(68 |
/ |
535) |
= |
1.14392523 |
5 |
4161 |
2516 |
- |
2528 |
= |
-12 |
* |
(65 |
/ |
535) |
= |
-1.45794392 |
6 |
4163 |
2517 |
- |
2552 |
= |
-35 |
* |
(81 |
/ |
535) |
= |
-5.29906542 |
7 |
4166 |
2517 |
- |
2567 |
= |
-50 |
* |
(81 |
/ |
535) |
= |
-7.57009345 |
8 |
4167 |
2553 |
- |
2586 |
= |
-33 |
* |
(90 |
/ |
535) |
= |
-5.55140187 |
11 |
4169 |
2579 |
- |
2628 |
= |
-49 |
* |
(79 |
/ |
535) |
= |
-7.235514 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Durham Unified
|
-27 |
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 |
4234 |
2422 |
- |
2436 |
= |
-14 |
* |
(79 |
/ |
506) |
= |
-2.18577075 |
4 |
4235 |
2479 |
- |
2485 |
= |
-6 |
* |
(74 |
/ |
506) |
= |
-0.87747035 |
5 |
4237 |
2519 |
- |
2528 |
= |
-9 |
* |
(70 |
/ |
506) |
= |
-1.24505928 |
6 |
4240 |
2566 |
- |
2552 |
= |
14 |
* |
(70 |
/ |
506) |
= |
1.93675888 |
7 |
4241 |
2543 |
- |
2567 |
= |
-24 |
* |
(78 |
/ |
506) |
= |
-3.69960473 |
8 |
4243 |
2549 |
- |
2586 |
= |
-37 |
* |
(75 |
/ |
506) |
= |
-5.48418969 |
11 |
4246 |
2583 |
- |
2628 |
= |
-45 |
* |
(60 |
/ |
506) |
= |
-5.33596838 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Durham Unified
|
-17 |
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 |
4235 |
2402 |
- |
2436 |
= |
-34 |
* |
(73 |
/ |
530) |
= |
-4.68301887 |
4 |
4238 |
2476 |
- |
2485 |
= |
-9 |
* |
(82 |
/ |
530) |
= |
-1.39245283 |
5 |
4239 |
2518 |
- |
2528 |
= |
-10 |
* |
(83 |
/ |
530) |
= |
-1.56603773 |
6 |
4242 |
2551 |
- |
2552 |
= |
-1 |
* |
(72 |
/ |
530) |
= |
-0.13584906 |
7 |
4243 |
2573 |
- |
2567 |
= |
6 |
* |
(79 |
/ |
530) |
= |
0.89433962 |
8 |
4246 |
2555 |
- |
2586 |
= |
-31 |
* |
(79 |
/ |
530) |
= |
-4.62075469 |
11 |
4247 |
2599 |
- |
2628 |
= |
-29 |
* |
(62 |
/ |
530) |
= |
-3.39245283 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Durham Unified
|
-15 |
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 |
4293 |
2435 |
- |
2436 |
= |
-1 |
* |
(88 |
/ |
565) |
= |
-0.15575221 |
4 |
4294 |
2460 |
- |
2485 |
= |
-25 |
* |
(78 |
/ |
565) |
= |
-3.45132743 |
5 |
4295 |
2506 |
- |
2528 |
= |
-22 |
* |
(92 |
/ |
565) |
= |
-3.58230088 |
6 |
4296 |
2535 |
- |
2552 |
= |
-17 |
* |
(82 |
/ |
565) |
= |
-2.46725663 |
7 |
4297 |
2570 |
- |
2567 |
= |
3 |
* |
(74 |
/ |
565) |
= |
0.39292035 |
8 |
4298 |
2558 |
- |
2586 |
= |
-28 |
* |
(83 |
/ |
565) |
= |
-4.11327431 |
11 |
4299 |
2597 |
- |
2628 |
= |
-31 |
* |
(68 |
/ |
565) |
= |
-3.73097344 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Durham Unified
|
-17 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-38
|
-27
|
-17
|
-15
|
-17
|
-114.0 |
-22.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 4.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -49.8
For the lines, you have the data necessary to plot the chart.