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 |
861785 |
2553 |
- |
2628 |
= |
-75 |
* |
(528 |
/ |
528)
|
= |
-75.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for James A. Garfield Senior High
|
-75 |
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 |
11 |
27266 |
2581 |
- |
2628 |
= |
-47 |
* |
(547 |
/ |
547)
|
= |
-47.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for James A. Garfield Senior High
|
-47 |
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 |
27846 |
2572 |
- |
2628 |
= |
-56 |
* |
(584 |
/ |
584)
|
= |
-56.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for James A. Garfield Senior High
|
-56 |
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 |
27895 |
2588 |
- |
2628 |
= |
-40 |
* |
(547 |
/ |
547)
|
= |
-40.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for James A. Garfield Senior High
|
-40 |
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 |
28074 |
2574 |
- |
2628 |
= |
-54 |
* |
(587 |
/ |
587)
|
= |
-54.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for James A. Garfield Senior High
|
-54 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-75
|
-47
|
-56
|
-40
|
-54
|
-272.0 |
-54.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -15.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -93.4
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: