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 |
1925348 |
2531 |
- |
2628 |
= |
-97 |
* |
(721 |
/ |
721) |
= |
-97.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for San Benito High
|
-97 |
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 |
59302 |
2550 |
- |
2628 |
= |
-78 |
* |
(695 |
/ |
695) |
= |
-78.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for San Benito High
|
-78 |
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 |
61051 |
2576 |
- |
2628 |
= |
-52 |
* |
(684 |
/ |
684) |
= |
-52.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for San Benito High
|
-52 |
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 |
61166 |
2561 |
- |
2628 |
= |
-67 |
* |
(720 |
/ |
720) |
= |
-67.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for San Benito High
|
-67 |
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 |
61397 |
2558 |
- |
2628 |
= |
-70 |
* |
(682 |
/ |
682) |
= |
-70.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for San Benito High
|
-70 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-97
|
-78
|
-52
|
-67
|
-70
|
-364.0 |
-72.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -24.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -120.8
For the lines, you have the data necessary to plot the chart.