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 |
2371609 |
2479 |
- |
2436 |
= |
43 |
* |
(67 |
/ |
237)
|
= |
12.1561181 |
| 4 |
2371610 |
2519 |
- |
2485 |
= |
34 |
* |
(68 |
/ |
237)
|
= |
9.75527425 |
| 5 |
2371613 |
2557 |
- |
2528 |
= |
29 |
* |
(102 |
/ |
237)
|
= |
12.48101263 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Stevenson (Robert Louis) Elementary
|
34 |
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 |
72444 |
2459 |
- |
2436 |
= |
23 |
* |
(88 |
/ |
223)
|
= |
9.07623318 |
| 4 |
72445 |
2524 |
- |
2485 |
= |
39 |
* |
(66 |
/ |
223)
|
= |
11.54260088 |
| 5 |
72448 |
2573 |
- |
2528 |
= |
45 |
* |
(69 |
/ |
223)
|
= |
13.9237668 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Stevenson (Robert Louis) Elementary
|
35 |
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 |
74418 |
2479 |
- |
2436 |
= |
43 |
* |
(67 |
/ |
233)
|
= |
12.36480686 |
| 4 |
74420 |
2522 |
- |
2485 |
= |
37 |
* |
(100 |
/ |
233)
|
= |
15.87982831 |
| 5 |
74421 |
2573 |
- |
2528 |
= |
45 |
* |
(66 |
/ |
233)
|
= |
12.74678109 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Stevenson (Robert Louis) Elementary
|
41 |
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 |
74592 |
2472 |
- |
2436 |
= |
36 |
* |
(89 |
/ |
257)
|
= |
12.46692604 |
| 4 |
74593 |
2520 |
- |
2485 |
= |
35 |
* |
(67 |
/ |
257)
|
= |
9.12451362 |
| 5 |
74596 |
2558 |
- |
2528 |
= |
30 |
* |
(101 |
/ |
257)
|
= |
11.78988324 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Stevenson (Robert Louis) Elementary
|
33 |
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 |
75117 |
2461 |
- |
2436 |
= |
25 |
* |
(89 |
/ |
256)
|
= |
8.69140625 |
| 4 |
75118 |
2531 |
- |
2485 |
= |
46 |
* |
(101 |
/ |
256)
|
= |
18.1484375 |
| 5 |
75119 |
2575 |
- |
2528 |
= |
47 |
* |
(66 |
/ |
256)
|
= |
12.1171875 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Stevenson (Robert Louis) Elementary
|
39 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
34
|
35
|
41
|
33
|
39
|
182.0 |
36.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 45.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 27.4
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:
