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 |
1951945 |
2577 |
- |
2628 |
= |
-51 |
* |
(5724 |
/ |
5724) |
= |
-51.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Chaffey Joint Union High
|
-51 |
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 |
60131 |
0 |
- |
2586 |
= |
|
* |
(1 |
/ |
5520) |
= |
|
11 |
60132 |
2586 |
- |
2628 |
= |
-42 |
* |
(5519 |
/ |
5520) |
= |
-41.99239128 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Chaffey Joint Union High
|
-42 |
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 |
61876 |
2583 |
- |
2628 |
= |
-45 |
* |
(5610 |
/ |
5610) |
= |
-45.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Chaffey Joint Union High
|
-45 |
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 |
61966 |
2582 |
- |
2628 |
= |
-46 |
* |
(5507 |
/ |
5507) |
= |
-46.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Chaffey Joint Union High
|
-46 |
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 |
62227 |
2588 |
- |
2628 |
= |
-40 |
* |
(5492 |
/ |
5492) |
= |
-40.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Chaffey Joint Union High
|
-40 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-51
|
-42
|
-45
|
-46
|
-40
|
-224.0 |
-44.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -32.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -56.8
For the lines, you have the data necessary to plot the chart.