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 |
3133757 |
2434 |
- |
2436 |
= |
-2 |
* |
(1330 |
/ |
9233) |
= |
-0.28809704 |
4 |
3133758 |
2476 |
- |
2485 |
= |
-9 |
* |
(1225 |
/ |
9233) |
= |
-1.19408642 |
5 |
3133761 |
2494 |
- |
2528 |
= |
-34 |
* |
(1292 |
/ |
9233) |
= |
-4.75771687 |
6 |
3133762 |
2534 |
- |
2552 |
= |
-18 |
* |
(1351 |
/ |
9233) |
= |
-2.63381348 |
7 |
3133765 |
2532 |
- |
2567 |
= |
-35 |
* |
(1350 |
/ |
9233) |
= |
-5.11751324 |
8 |
3133766 |
2542 |
- |
2586 |
= |
-44 |
* |
(1346 |
/ |
9233) |
= |
-6.41438318 |
11 |
3133769 |
2567 |
- |
2628 |
= |
-61 |
* |
(1339 |
/ |
9233) |
= |
-8.84642045 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Simi Valley Unified
|
-29 |
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 |
96627 |
2429 |
- |
2436 |
= |
-7 |
* |
(1207 |
/ |
8934) |
= |
-0.94571301 |
4 |
96629 |
2477 |
- |
2485 |
= |
-8 |
* |
(1290 |
/ |
8934) |
= |
-1.15513767 |
5 |
96630 |
2504 |
- |
2528 |
= |
-24 |
* |
(1221 |
/ |
8934) |
= |
-3.28005372 |
6 |
96632 |
2529 |
- |
2552 |
= |
-23 |
* |
(1266 |
/ |
8934) |
= |
-3.25923437 |
7 |
96634 |
2540 |
- |
2567 |
= |
-27 |
* |
(1292 |
/ |
8934) |
= |
-3.90463397 |
8 |
96637 |
2548 |
- |
2586 |
= |
-38 |
* |
(1351 |
/ |
8934) |
= |
-5.7463622 |
11 |
96639 |
2573 |
- |
2628 |
= |
-55 |
* |
(1307 |
/ |
8934) |
= |
-8.04622786 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Simi Valley Unified
|
-26 |
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 |
99427 |
2436 |
- |
2436 |
= |
0 |
* |
(1128 |
/ |
8763) |
= |
0.0 |
4 |
99430 |
2475 |
- |
2485 |
= |
-10 |
* |
(1220 |
/ |
8763) |
= |
-1.39221727 |
5 |
99432 |
2496 |
- |
2528 |
= |
-32 |
* |
(1284 |
/ |
8763) |
= |
-4.68880518 |
6 |
99434 |
2537 |
- |
2552 |
= |
-15 |
* |
(1248 |
/ |
8763) |
= |
-2.1362547 |
7 |
99436 |
2536 |
- |
2567 |
= |
-31 |
* |
(1239 |
/ |
8763) |
= |
-4.38308795 |
8 |
99437 |
2555 |
- |
2586 |
= |
-31 |
* |
(1301 |
/ |
8763) |
= |
-4.60241925 |
11 |
99439 |
2582 |
- |
2628 |
= |
-46 |
* |
(1343 |
/ |
8763) |
= |
-7.04986874 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Simi Valley Unified
|
-24 |
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 |
99586 |
2440 |
- |
2436 |
= |
4 |
* |
(1133 |
/ |
8466) |
= |
0.53531774 |
4 |
99589 |
2479 |
- |
2485 |
= |
-6 |
* |
(1107 |
/ |
8466) |
= |
-0.78454996 |
5 |
99590 |
2494 |
- |
2528 |
= |
-34 |
* |
(1194 |
/ |
8466) |
= |
-4.79518072 |
6 |
99593 |
2536 |
- |
2552 |
= |
-16 |
* |
(1298 |
/ |
8466) |
= |
-2.45310653 |
7 |
99594 |
2541 |
- |
2567 |
= |
-26 |
* |
(1236 |
/ |
8466) |
= |
-3.79588942 |
8 |
99597 |
2556 |
- |
2586 |
= |
-30 |
* |
(1233 |
/ |
8466) |
= |
-4.36924167 |
11 |
99598 |
2581 |
- |
2628 |
= |
-47 |
* |
(1265 |
/ |
8466) |
= |
-7.02279706 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Simi Valley Unified
|
-23 |
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 |
100255 |
2446 |
- |
2436 |
= |
10 |
* |
(1074 |
/ |
8413) |
= |
1.27659574 |
4 |
100256 |
2483 |
- |
2485 |
= |
-2 |
* |
(1138 |
/ |
8413) |
= |
-0.2705337 |
5 |
100257 |
2504 |
- |
2528 |
= |
-24 |
* |
(1119 |
/ |
8413) |
= |
-3.19220254 |
6 |
100258 |
2536 |
- |
2552 |
= |
-16 |
* |
(1206 |
/ |
8413) |
= |
-2.29359325 |
7 |
100259 |
2535 |
- |
2567 |
= |
-32 |
* |
(1303 |
/ |
8413) |
= |
-4.9561393 |
8 |
100260 |
2550 |
- |
2586 |
= |
-36 |
* |
(1244 |
/ |
8413) |
= |
-5.32319029 |
11 |
100261 |
2571 |
- |
2628 |
= |
-57 |
* |
(1329 |
/ |
8413) |
= |
-9.00427906 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Simi Valley Unified
|
-24 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-29
|
-26
|
-24
|
-23
|
-24
|
-126.0 |
-25.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -19.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -31.2
For the lines, you have the data necessary to plot the chart.