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 |
938399 |
2394 |
- |
2436 |
= |
-42 |
* |
(80 |
/ |
236)
|
= |
-14.2372881 |
| 4 |
938400 |
2475 |
- |
2485 |
= |
-10 |
* |
(78 |
/ |
236)
|
= |
-3.30508474 |
| 5 |
938403 |
2464 |
- |
2528 |
= |
-64 |
* |
(78 |
/ |
236)
|
= |
-21.15254234 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for O'Melveny Elementary
|
-39 |
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 |
29682 |
2381 |
- |
2436 |
= |
-55 |
* |
(91 |
/ |
249)
|
= |
-20.10040159 |
| 4 |
29684 |
2472 |
- |
2485 |
= |
-13 |
* |
(79 |
/ |
249)
|
= |
-4.12449799 |
| 5 |
29687 |
2498 |
- |
2528 |
= |
-30 |
* |
(79 |
/ |
249)
|
= |
-9.51807228 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for O'Melveny Elementary
|
-34 |
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 |
30248 |
2411 |
- |
2436 |
= |
-25 |
* |
(69 |
/ |
227)
|
= |
-7.59911893 |
| 4 |
30249 |
2460 |
- |
2485 |
= |
-25 |
* |
(80 |
/ |
227)
|
= |
-8.81057268 |
| 5 |
30252 |
2467 |
- |
2528 |
= |
-61 |
* |
(78 |
/ |
227)
|
= |
-20.96035237 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for O'Melveny Elementary
|
-37 |
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 |
30297 |
2402 |
- |
2436 |
= |
-34 |
* |
(76 |
/ |
222)
|
= |
-11.63963963 |
| 4 |
30298 |
2493 |
- |
2485 |
= |
8 |
* |
(65 |
/ |
222)
|
= |
2.34234234 |
| 5 |
30301 |
2472 |
- |
2528 |
= |
-56 |
* |
(81 |
/ |
222)
|
= |
-20.43243238 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for O'Melveny Elementary
|
-30 |
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 |
30470 |
2407 |
- |
2436 |
= |
-29 |
* |
(79 |
/ |
217)
|
= |
-10.55760367 |
| 4 |
30471 |
2489 |
- |
2485 |
= |
4 |
* |
(72 |
/ |
217)
|
= |
1.32718894 |
| 5 |
30472 |
2516 |
- |
2528 |
= |
-12 |
* |
(66 |
/ |
217)
|
= |
-3.64976958 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for O'Melveny Elementary
|
-13 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-39
|
-34
|
-37
|
-30
|
-13
|
-153.0 |
-30.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -0.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -60.6
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:
