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 |
2596827 |
2604 |
- |
2628 |
= |
-24 |
* |
(260 |
/ |
260) |
= |
-24.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Santa Ynez Valley Union High
|
-24 |
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 |
79171 |
2626 |
- |
2628 |
= |
-2 |
* |
(216 |
/ |
216) |
= |
-2.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Santa Ynez Valley Union High
|
-2 |
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 |
81322 |
2607 |
- |
2628 |
= |
-21 |
* |
(231 |
/ |
231) |
= |
-21.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Santa Ynez Valley Union High
|
-21 |
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 |
81476 |
2602 |
- |
2628 |
= |
-26 |
* |
(223 |
/ |
223) |
= |
-26.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Santa Ynez Valley Union High
|
-26 |
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 |
82002 |
2577 |
- |
2628 |
= |
-51 |
* |
(217 |
/ |
217) |
= |
-51.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Santa Ynez Valley Union High
|
-51 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-24
|
-2
|
-21
|
-26
|
-51
|
-124.0 |
-24.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 26.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -75.8
For the lines, you have the data necessary to plot the chart.