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 |
1022003 |
2440 |
- |
2436 |
= |
4 |
* |
(323 |
/ |
2119) |
= |
0.60972156 |
4 |
1022006 |
2466 |
- |
2485 |
= |
-19 |
* |
(334 |
/ |
2119) |
= |
-2.99480886 |
5 |
1022007 |
2502 |
- |
2528 |
= |
-26 |
* |
(338 |
/ |
2119) |
= |
-4.14723925 |
6 |
1022010 |
2538 |
- |
2552 |
= |
-14 |
* |
(390 |
/ |
2119) |
= |
-2.57668711 |
7 |
1022011 |
2561 |
- |
2567 |
= |
-6 |
* |
(371 |
/ |
2119) |
= |
-1.05049552 |
8 |
1022014 |
2585 |
- |
2586 |
= |
-1 |
* |
(363 |
/ |
2119) |
= |
-0.17130722 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Lowell Joint
|
-10 |
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 |
32082 |
2451 |
- |
2436 |
= |
15 |
* |
(329 |
/ |
2130) |
= |
2.3169014 |
4 |
32085 |
2495 |
- |
2485 |
= |
10 |
* |
(321 |
/ |
2130) |
= |
1.50704225 |
5 |
32086 |
2519 |
- |
2528 |
= |
-9 |
* |
(332 |
/ |
2130) |
= |
-1.4028169 |
6 |
32088 |
2548 |
- |
2552 |
= |
-4 |
* |
(341 |
/ |
2130) |
= |
-0.64037558 |
7 |
32091 |
2551 |
- |
2567 |
= |
-16 |
* |
(421 |
/ |
2130) |
= |
-3.16244131 |
8 |
32092 |
2581 |
- |
2586 |
= |
-5 |
* |
(384 |
/ |
2130) |
= |
-0.90140845 |
11 |
32095 |
0 |
- |
2628 |
= |
|
* |
(2 |
/ |
2130) |
= |
|
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Lowell Joint
|
-2 |
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 |
32616 |
2455 |
- |
2436 |
= |
19 |
* |
(321 |
/ |
2071) |
= |
2.94495412 |
4 |
32618 |
2488 |
- |
2485 |
= |
3 |
* |
(337 |
/ |
2071) |
= |
0.48816997 |
5 |
32621 |
2530 |
- |
2528 |
= |
2 |
* |
(316 |
/ |
2071) |
= |
0.30516659 |
6 |
32622 |
2546 |
- |
2552 |
= |
-6 |
* |
(331 |
/ |
2071) |
= |
-0.95895702 |
7 |
32624 |
2573 |
- |
2567 |
= |
6 |
* |
(356 |
/ |
2071) |
= |
1.0313858 |
8 |
32626 |
2587 |
- |
2586 |
= |
1 |
* |
(410 |
/ |
2071) |
= |
0.19797199 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Lowell Joint
|
4 |
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 |
32635 |
2441 |
- |
2436 |
= |
5 |
* |
(307 |
/ |
2077) |
= |
0.7390467 |
4 |
32636 |
2491 |
- |
2485 |
= |
6 |
* |
(345 |
/ |
2077) |
= |
0.99662975 |
5 |
32639 |
2511 |
- |
2528 |
= |
-17 |
* |
(345 |
/ |
2077) |
= |
-2.8237843 |
6 |
32640 |
2553 |
- |
2552 |
= |
1 |
* |
(341 |
/ |
2077) |
= |
0.1641791 |
7 |
32643 |
2561 |
- |
2567 |
= |
-6 |
* |
(380 |
/ |
2077) |
= |
-1.09773712 |
8 |
32644 |
2600 |
- |
2586 |
= |
14 |
* |
(359 |
/ |
2077) |
= |
2.4198363 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Lowell Joint
|
0 |
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 |
32817 |
2446 |
- |
2436 |
= |
10 |
* |
(344 |
/ |
2122) |
= |
1.62111215 |
4 |
32818 |
2487 |
- |
2485 |
= |
2 |
* |
(319 |
/ |
2122) |
= |
0.30065975 |
5 |
32819 |
2532 |
- |
2528 |
= |
4 |
* |
(355 |
/ |
2122) |
= |
0.66918002 |
6 |
32820 |
2551 |
- |
2552 |
= |
-1 |
* |
(369 |
/ |
2122) |
= |
-0.17389255 |
7 |
32821 |
2578 |
- |
2567 |
= |
11 |
* |
(370 |
/ |
2122) |
= |
1.91800188 |
8 |
32822 |
2580 |
- |
2586 |
= |
-6 |
* |
(365 |
/ |
2122) |
= |
-1.03204524 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Lowell Joint
|
3 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-10
|
-2
|
4
|
0
|
3
|
-5.0 |
-1.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 16.75
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -19.25
For the lines, you have the data necessary to plot the chart.