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 |
207406 |
2366 |
- |
2436 |
= |
-70 |
* |
(109 |
/ |
242)
|
= |
-31.52892561 |
| 4 |
207407 |
2395 |
- |
2485 |
= |
-90 |
* |
(67 |
/ |
242)
|
= |
-24.91735536 |
| 5 |
207410 |
2415 |
- |
2528 |
= |
-113 |
* |
(66 |
/ |
242)
|
= |
-30.81818174 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Bel Air Elementary
|
-87 |
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 |
6158 |
2372 |
- |
2436 |
= |
-64 |
* |
(74 |
/ |
252)
|
= |
-18.79365075 |
| 4 |
6159 |
2388 |
- |
2485 |
= |
-97 |
* |
(102 |
/ |
252)
|
= |
-39.26190469 |
| 5 |
6161 |
2411 |
- |
2528 |
= |
-117 |
* |
(76 |
/ |
252)
|
= |
-35.28571422 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Bel Air Elementary
|
-93 |
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 |
6333 |
2337 |
- |
2436 |
= |
-99 |
* |
(66 |
/ |
252)
|
= |
-25.92857134 |
| 4 |
6335 |
2397 |
- |
2485 |
= |
-88 |
* |
(82 |
/ |
252)
|
= |
-28.6349206 |
| 5 |
6337 |
2424 |
- |
2528 |
= |
-104 |
* |
(104 |
/ |
252)
|
= |
-42.92063485 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Bel Air Elementary
|
-97 |
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 |
6329 |
2375 |
- |
2436 |
= |
-61 |
* |
(73 |
/ |
214)
|
= |
-20.8084112 |
| 4 |
6332 |
2384 |
- |
2485 |
= |
-101 |
* |
(57 |
/ |
214)
|
= |
-26.90186914 |
| 5 |
6333 |
2407 |
- |
2528 |
= |
-121 |
* |
(84 |
/ |
214)
|
= |
-47.49532704 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Bel Air Elementary
|
-95 |
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 |
6389 |
2366 |
- |
2436 |
= |
-70 |
* |
(93 |
/ |
231)
|
= |
-28.18181814 |
| 4 |
6390 |
2398 |
- |
2485 |
= |
-87 |
* |
(74 |
/ |
231)
|
= |
-27.87012984 |
| 5 |
6391 |
2415 |
- |
2528 |
= |
-113 |
* |
(64 |
/ |
231)
|
= |
-31.3073593 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Bel Air Elementary
|
-87 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-87
|
-93
|
-97
|
-95
|
-87
|
-459.0 |
-91.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -79.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -103.8
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:
