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 |
2703716 |
2425 |
- |
2436 |
= |
-11 |
* |
(2567 |
/ |
16890) |
= |
-1.67181764 |
4 |
2703717 |
2470 |
- |
2485 |
= |
-15 |
* |
(2451 |
/ |
16890) |
= |
-2.17673178 |
5 |
2703720 |
2491 |
- |
2528 |
= |
-37 |
* |
(2513 |
/ |
16890) |
= |
-5.50509177 |
6 |
2703721 |
2511 |
- |
2552 |
= |
-41 |
* |
(2303 |
/ |
16890) |
= |
-5.59046771 |
7 |
2703724 |
2539 |
- |
2567 |
= |
-28 |
* |
(2355 |
/ |
16890) |
= |
-3.90408525 |
8 |
2703725 |
2550 |
- |
2586 |
= |
-36 |
* |
(2359 |
/ |
16890) |
= |
-5.02806391 |
11 |
2703728 |
2583 |
- |
2628 |
= |
-45 |
* |
(2342 |
/ |
16890) |
= |
-6.23978685 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for San Jose Unified
|
-30 |
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 |
82327 |
2434 |
- |
2436 |
= |
-2 |
* |
(2250 |
/ |
16388) |
= |
-0.27459116 |
4 |
82328 |
2476 |
- |
2485 |
= |
-9 |
* |
(2502 |
/ |
16388) |
= |
-1.37405418 |
5 |
82331 |
2502 |
- |
2528 |
= |
-26 |
* |
(2377 |
/ |
16388) |
= |
-3.771174 |
6 |
82332 |
2525 |
- |
2552 |
= |
-27 |
* |
(2286 |
/ |
16388) |
= |
-3.7662924 |
7 |
82334 |
2537 |
- |
2567 |
= |
-30 |
* |
(2271 |
/ |
16388) |
= |
-4.15731021 |
8 |
82337 |
2561 |
- |
2586 |
= |
-25 |
* |
(2335 |
/ |
16388) |
= |
-3.5620576 |
11 |
82339 |
2577 |
- |
2628 |
= |
-51 |
* |
(2367 |
/ |
16388) |
= |
-7.36618255 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for San Jose Unified
|
-24 |
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 |
84621 |
2438 |
- |
2436 |
= |
2 |
* |
(2290 |
/ |
16026) |
= |
0.2857856 |
4 |
84622 |
2480 |
- |
2485 |
= |
-5 |
* |
(2217 |
/ |
16026) |
= |
-0.69168851 |
5 |
84625 |
2497 |
- |
2528 |
= |
-31 |
* |
(2424 |
/ |
16026) |
= |
-4.68888054 |
6 |
84627 |
2532 |
- |
2552 |
= |
-20 |
* |
(2165 |
/ |
16026) |
= |
-2.70185946 |
7 |
84629 |
2541 |
- |
2567 |
= |
-26 |
* |
(2303 |
/ |
16026) |
= |
-3.73630351 |
8 |
84630 |
2557 |
- |
2586 |
= |
-29 |
* |
(2255 |
/ |
16026) |
= |
-4.08055659 |
11 |
84633 |
2573 |
- |
2628 |
= |
-55 |
* |
(2372 |
/ |
16026) |
= |
-8.14052162 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for San Jose 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 |
84838 |
2441 |
- |
2436 |
= |
5 |
* |
(2178 |
/ |
15650) |
= |
0.69584665 |
4 |
84841 |
2479 |
- |
2485 |
= |
-6 |
* |
(2289 |
/ |
15650) |
= |
-0.87757188 |
5 |
84843 |
2500 |
- |
2528 |
= |
-28 |
* |
(2211 |
/ |
15650) |
= |
-3.95578274 |
6 |
84844 |
2526 |
- |
2552 |
= |
-26 |
* |
(2219 |
/ |
15650) |
= |
-3.68651756 |
7 |
84847 |
2548 |
- |
2567 |
= |
-19 |
* |
(2158 |
/ |
15650) |
= |
-2.61993609 |
8 |
84849 |
2563 |
- |
2586 |
= |
-23 |
* |
(2279 |
/ |
15650) |
= |
-3.34932907 |
11 |
84851 |
2574 |
- |
2628 |
= |
-54 |
* |
(2316 |
/ |
15650) |
= |
-7.99130988 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for San Jose Unified
|
-22 |
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 |
85436 |
2435 |
- |
2436 |
= |
-1 |
* |
(2109 |
/ |
15148) |
= |
-0.1392263 |
4 |
85437 |
2478 |
- |
2485 |
= |
-7 |
* |
(2152 |
/ |
15148) |
= |
-0.99445471 |
5 |
85438 |
2502 |
- |
2528 |
= |
-26 |
* |
(2231 |
/ |
15148) |
= |
-3.82928437 |
6 |
85439 |
2523 |
- |
2552 |
= |
-29 |
* |
(2068 |
/ |
15148) |
= |
-3.95907049 |
7 |
85440 |
2542 |
- |
2567 |
= |
-25 |
* |
(2152 |
/ |
15148) |
= |
-3.55162398 |
8 |
85441 |
2569 |
- |
2586 |
= |
-17 |
* |
(2127 |
/ |
15148) |
= |
-2.38704779 |
11 |
85442 |
2577 |
- |
2628 |
= |
-51 |
* |
(2309 |
/ |
15148) |
= |
-7.77389751 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for San Jose Unified
|
-23 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-30
|
-24
|
-24
|
-22
|
-23
|
-123.0 |
-24.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -15.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -33.6
For the lines, you have the data necessary to plot the chart.