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 |
1319136 |
2411 |
- |
2436 |
= |
-25 |
* |
(228 |
/ |
1217) |
= |
-4.6836483 |
4 |
1319137 |
2433 |
- |
2485 |
= |
-52 |
* |
(211 |
/ |
1217) |
= |
-9.01561211 |
5 |
1319140 |
2463 |
- |
2528 |
= |
-65 |
* |
(203 |
/ |
1217) |
= |
-10.84223498 |
6 |
1319141 |
2494 |
- |
2552 |
= |
-58 |
* |
(192 |
/ |
1217) |
= |
-9.15036971 |
7 |
1319144 |
2495 |
- |
2567 |
= |
-72 |
* |
(174 |
/ |
1217) |
= |
-10.29416594 |
8 |
1319145 |
2511 |
- |
2586 |
= |
-75 |
* |
(209 |
/ |
1217) |
= |
-12.88003283 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Winton
|
-57 |
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 |
41397 |
2400 |
- |
2436 |
= |
-36 |
* |
(219 |
/ |
1212) |
= |
-6.50495048 |
4 |
41399 |
2438 |
- |
2485 |
= |
-47 |
* |
(231 |
/ |
1212) |
= |
-8.95792077 |
5 |
41401 |
2475 |
- |
2528 |
= |
-53 |
* |
(207 |
/ |
1212) |
= |
-9.05198019 |
6 |
41402 |
2491 |
- |
2552 |
= |
-61 |
* |
(201 |
/ |
1212) |
= |
-10.11633662 |
7 |
41404 |
2505 |
- |
2567 |
= |
-62 |
* |
(191 |
/ |
1212) |
= |
-9.77062706 |
8 |
41407 |
2543 |
- |
2586 |
= |
-43 |
* |
(162 |
/ |
1212) |
= |
-5.74752474 |
11 |
41408 |
0 |
- |
2628 |
= |
|
* |
(1 |
/ |
1212) |
= |
|
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Winton
|
-50 |
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 |
42415 |
2415 |
- |
2436 |
= |
-21 |
* |
(204 |
/ |
1242) |
= |
-3.44927535 |
4 |
42417 |
2457 |
- |
2485 |
= |
-28 |
* |
(215 |
/ |
1242) |
= |
-4.84702092 |
5 |
42420 |
2478 |
- |
2528 |
= |
-50 |
* |
(231 |
/ |
1242) |
= |
-9.2995169 |
6 |
42422 |
2505 |
- |
2552 |
= |
-47 |
* |
(203 |
/ |
1242) |
= |
-7.68196454 |
7 |
42424 |
2520 |
- |
2567 |
= |
-47 |
* |
(193 |
/ |
1242) |
= |
-7.30354263 |
8 |
42425 |
2539 |
- |
2586 |
= |
-47 |
* |
(196 |
/ |
1242) |
= |
-7.4170692 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Winton
|
-40 |
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 |
42428 |
2423 |
- |
2436 |
= |
-13 |
* |
(178 |
/ |
1209) |
= |
-1.91397848 |
4 |
42431 |
2449 |
- |
2485 |
= |
-36 |
* |
(202 |
/ |
1209) |
= |
-6.01488832 |
5 |
42432 |
2480 |
- |
2528 |
= |
-48 |
* |
(209 |
/ |
1209) |
= |
-8.29776672 |
6 |
42435 |
2511 |
- |
2552 |
= |
-41 |
* |
(229 |
/ |
1209) |
= |
-7.76592222 |
7 |
42436 |
2528 |
- |
2567 |
= |
-39 |
* |
(203 |
/ |
1209) |
= |
-6.54838708 |
8 |
42439 |
2517 |
- |
2586 |
= |
-69 |
* |
(188 |
/ |
1209) |
= |
-10.7295285 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Winton
|
-41 |
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 |
42571 |
2439 |
- |
2436 |
= |
3 |
* |
(223 |
/ |
1268) |
= |
0.52760252 |
4 |
42572 |
2455 |
- |
2485 |
= |
-30 |
* |
(178 |
/ |
1268) |
= |
-4.21135644 |
5 |
42573 |
2492 |
- |
2528 |
= |
-36 |
* |
(211 |
/ |
1268) |
= |
-5.99053626 |
6 |
42574 |
2506 |
- |
2552 |
= |
-46 |
* |
(211 |
/ |
1268) |
= |
-7.65457411 |
7 |
42575 |
2524 |
- |
2567 |
= |
-43 |
* |
(234 |
/ |
1268) |
= |
-7.9353312 |
8 |
42576 |
2543 |
- |
2586 |
= |
-43 |
* |
(211 |
/ |
1268) |
= |
-7.15536276 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Winton
|
-32 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-57
|
-50
|
-40
|
-41
|
-32
|
-220.0 |
-44.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -17.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -71.0
For the lines, you have the data necessary to plot the chart.