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 |
2753912 |
2433 |
- |
2436 |
= |
-3 |
* |
(215 |
/ |
1367) |
= |
-0.47183614 |
4 |
2753915 |
2483 |
- |
2485 |
= |
-2 |
* |
(197 |
/ |
1367) |
= |
-0.28822238 |
5 |
2753916 |
2506 |
- |
2528 |
= |
-22 |
* |
(222 |
/ |
1367) |
= |
-3.57278711 |
6 |
2753919 |
2525 |
- |
2552 |
= |
-27 |
* |
(193 |
/ |
1367) |
= |
-3.81199705 |
7 |
2753920 |
2550 |
- |
2567 |
= |
-17 |
* |
(215 |
/ |
1367) |
= |
-2.6737381 |
8 |
2753923 |
2546 |
- |
2586 |
= |
-40 |
* |
(162 |
/ |
1367) |
= |
-4.74030724 |
11 |
2753924 |
2583 |
- |
2628 |
= |
-45 |
* |
(163 |
/ |
1367) |
= |
-5.36576441 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for San Lorenzo Valley Unified
|
-21 |
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 |
83776 |
2446 |
- |
2436 |
= |
10 |
* |
(206 |
/ |
1349) |
= |
1.52705707 |
4 |
83779 |
2479 |
- |
2485 |
= |
-6 |
* |
(207 |
/ |
1349) |
= |
-0.92068198 |
5 |
83780 |
2518 |
- |
2528 |
= |
-10 |
* |
(200 |
/ |
1349) |
= |
-1.48257968 |
6 |
83782 |
2535 |
- |
2552 |
= |
-17 |
* |
(216 |
/ |
1349) |
= |
-2.7220163 |
7 |
83785 |
2566 |
- |
2567 |
= |
-1 |
* |
(178 |
/ |
1349) |
= |
-0.13194959 |
8 |
83786 |
2560 |
- |
2586 |
= |
-26 |
* |
(181 |
/ |
1349) |
= |
-3.48850999 |
11 |
83789 |
2601 |
- |
2628 |
= |
-27 |
* |
(161 |
/ |
1349) |
= |
-3.22238693 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for San Lorenzo Valley Unified
|
-10 |
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 |
86092 |
2440 |
- |
2436 |
= |
4 |
* |
(170 |
/ |
1352) |
= |
0.50295858 |
4 |
86095 |
2485 |
- |
2485 |
= |
0 |
* |
(208 |
/ |
1352) |
= |
0.0 |
5 |
86097 |
2499 |
- |
2528 |
= |
-29 |
* |
(203 |
/ |
1352) |
= |
-4.35428991 |
6 |
86098 |
2519 |
- |
2552 |
= |
-33 |
* |
(207 |
/ |
1352) |
= |
-5.05251476 |
7 |
86101 |
2527 |
- |
2567 |
= |
-40 |
* |
(204 |
/ |
1352) |
= |
-6.03550292 |
8 |
86103 |
2535 |
- |
2586 |
= |
-51 |
* |
(176 |
/ |
1352) |
= |
-6.63905321 |
11 |
86105 |
2618 |
- |
2628 |
= |
-10 |
* |
(184 |
/ |
1352) |
= |
-1.36094674 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for San Lorenzo Valley Unified
|
-23 |
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 |
86325 |
2465 |
- |
2436 |
= |
29 |
* |
(175 |
/ |
1323) |
= |
3.83597883 |
4 |
86326 |
2479 |
- |
2485 |
= |
-6 |
* |
(177 |
/ |
1323) |
= |
-0.80272109 |
5 |
86329 |
2517 |
- |
2528 |
= |
-11 |
* |
(203 |
/ |
1323) |
= |
-1.68783068 |
6 |
86330 |
2511 |
- |
2552 |
= |
-41 |
* |
(207 |
/ |
1323) |
= |
-6.41496599 |
7 |
86333 |
2551 |
- |
2567 |
= |
-16 |
* |
(206 |
/ |
1323) |
= |
-2.49130763 |
8 |
86334 |
2520 |
- |
2586 |
= |
-66 |
* |
(203 |
/ |
1323) |
= |
-10.1269841 |
11 |
86337 |
2596 |
- |
2628 |
= |
-32 |
* |
(152 |
/ |
1323) |
= |
-3.6764928 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for San Lorenzo Valley Unified
|
-21 |
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 |
86924 |
2473 |
- |
2436 |
= |
37 |
* |
(191 |
/ |
1382) |
= |
5.11360346 |
4 |
86925 |
2504 |
- |
2485 |
= |
19 |
* |
(165 |
/ |
1382) |
= |
2.26845152 |
5 |
86926 |
2501 |
- |
2528 |
= |
-27 |
* |
(180 |
/ |
1382) |
= |
-3.51664254 |
6 |
86927 |
2530 |
- |
2552 |
= |
-22 |
* |
(216 |
/ |
1382) |
= |
-3.43849493 |
7 |
86928 |
2519 |
- |
2567 |
= |
-48 |
* |
(227 |
/ |
1382) |
= |
-7.88422574 |
8 |
86929 |
2547 |
- |
2586 |
= |
-39 |
* |
(205 |
/ |
1382) |
= |
-5.78509406 |
11 |
86930 |
2610 |
- |
2628 |
= |
-18 |
* |
(198 |
/ |
1382) |
= |
-2.5788712 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for San Lorenzo Valley Unified
|
-16 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-21
|
-10
|
-23
|
-21
|
-16
|
-91.0 |
-18.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -3.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -33.2
For the lines, you have the data necessary to plot the chart.