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 |
11 |
805606 |
2548 |
- |
2628 |
= |
-80 |
* |
(312 |
/ |
312)
|
= |
-80.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Arleta High
|
-80 |
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 |
8 |
25206 |
0 |
- |
2586 |
= |
|
* |
(0 |
/ |
319)
|
= |
|
11 |
25209 |
2567 |
- |
2628 |
= |
-61 |
* |
(319 |
/ |
319)
|
= |
-61.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Arleta High
|
-61 |
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 |
11 |
25703 |
2542 |
- |
2628 |
= |
-86 |
* |
(371 |
/ |
371)
|
= |
-86.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Arleta High
|
-86 |
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 |
11 |
25730 |
2551 |
- |
2628 |
= |
-77 |
* |
(323 |
/ |
323)
|
= |
-77.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Arleta High
|
-77 |
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 |
11 |
25890 |
2533 |
- |
2628 |
= |
-95 |
* |
(330 |
/ |
330)
|
= |
-95.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Arleta High
|
-95 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-80
|
-61
|
-86
|
-77
|
-95
|
-399.0 |
-79.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -43.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -115.8
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: