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 |
2380055 |
2391 |
- |
2436 |
= |
-45 |
* |
(32 |
/ |
190)
|
= |
-7.57894734 |
4 |
2380056 |
2441 |
- |
2485 |
= |
-44 |
* |
(32 |
/ |
190)
|
= |
-7.41052629 |
5 |
2380059 |
2433 |
- |
2528 |
= |
-95 |
* |
(30 |
/ |
190)
|
= |
-14.99999992 |
6 |
2380060 |
2444 |
- |
2552 |
= |
-108 |
* |
(33 |
/ |
190)
|
= |
-18.75789468 |
7 |
2380063 |
2506 |
- |
2567 |
= |
-61 |
* |
(33 |
/ |
190)
|
= |
-10.59473681 |
8 |
2380064 |
2516 |
- |
2586 |
= |
-70 |
* |
(30 |
/ |
190)
|
= |
-11.05263152 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for San Francisco Community Alternative
|
-70 |
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 |
72682 |
2421 |
- |
2436 |
= |
-15 |
* |
(30 |
/ |
175)
|
= |
-2.57142857 |
4 |
72684 |
2412 |
- |
2485 |
= |
-73 |
* |
(31 |
/ |
175)
|
= |
-12.93142856 |
5 |
72686 |
2460 |
- |
2528 |
= |
-68 |
* |
(31 |
/ |
175)
|
= |
-12.04571428 |
6 |
72687 |
2471 |
- |
2552 |
= |
-81 |
* |
(29 |
/ |
175)
|
= |
-13.42285709 |
7 |
72690 |
2474 |
- |
2567 |
= |
-93 |
* |
(30 |
/ |
175)
|
= |
-15.9428571 |
8 |
72691 |
2475 |
- |
2586 |
= |
-111 |
* |
(24 |
/ |
175)
|
= |
-15.22285713 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for San Francisco Community Alternative
|
-72 |
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 |
74654 |
2430 |
- |
2436 |
= |
-6 |
* |
(28 |
/ |
163)
|
= |
-1.03067485 |
4 |
74656 |
2458 |
- |
2485 |
= |
-27 |
* |
(30 |
/ |
163)
|
= |
-4.96932513 |
5 |
74658 |
2450 |
- |
2528 |
= |
-78 |
* |
(32 |
/ |
163)
|
= |
-15.3128834 |
6 |
74659 |
2426 |
- |
2552 |
= |
-126 |
* |
(23 |
/ |
163)
|
= |
-17.77914104 |
7 |
74662 |
2442 |
- |
2567 |
= |
-125 |
* |
(24 |
/ |
163)
|
= |
-18.40490788 |
8 |
74664 |
2498 |
- |
2586 |
= |
-88 |
* |
(26 |
/ |
163)
|
= |
-14.03680978 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for San Francisco Community Alternative
|
-72 |
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 |
74827 |
2457 |
- |
2436 |
= |
21 |
* |
(26 |
/ |
170)
|
= |
3.2117647 |
4 |
74830 |
2438 |
- |
2485 |
= |
-47 |
* |
(28 |
/ |
170)
|
= |
-7.74117645 |
5 |
74831 |
2476 |
- |
2528 |
= |
-52 |
* |
(32 |
/ |
170)
|
= |
-9.78823529 |
6 |
74834 |
2448 |
- |
2552 |
= |
-104 |
* |
(30 |
/ |
170)
|
= |
-18.35294115 |
7 |
74836 |
2463 |
- |
2567 |
= |
-104 |
* |
(27 |
/ |
170)
|
= |
-16.51764702 |
8 |
74838 |
2487 |
- |
2586 |
= |
-99 |
* |
(27 |
/ |
170)
|
= |
-15.72352937 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for San Francisco Community Alternative
|
-65 |
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 |
75356 |
2431 |
- |
2436 |
= |
-5 |
* |
(30 |
/ |
169)
|
= |
-0.88757396 |
4 |
75357 |
2483 |
- |
2485 |
= |
-2 |
* |
(21 |
/ |
169)
|
= |
-0.24852071 |
5 |
75358 |
2465 |
- |
2528 |
= |
-63 |
* |
(27 |
/ |
169)
|
= |
-10.06508872 |
6 |
75359 |
2457 |
- |
2552 |
= |
-95 |
* |
(31 |
/ |
169)
|
= |
-17.42603544 |
7 |
75360 |
2437 |
- |
2567 |
= |
-130 |
* |
(31 |
/ |
169)
|
= |
-23.84615376 |
8 |
75361 |
2453 |
- |
2586 |
= |
-133 |
* |
(29 |
/ |
169)
|
= |
-22.82248519 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for San Francisco Community Alternative
|
-75 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-70
|
-72
|
-72
|
-65
|
-75
|
-354.0 |
-70.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -61.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -79.8
For the lines, you have the data necessary to plot the chart.
Very last step
The percent of students getting a Free or Reduced Price Meal comes from the following sources: