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 |
655069 |
2499 |
- |
2628 |
= |
-129 |
* |
(1479 |
/ |
1479) |
= |
-129.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Centinela Valley Union High
|
-129 |
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 |
20812 |
2523 |
- |
2628 |
= |
-105 |
* |
(1539 |
/ |
1539) |
= |
-105.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Centinela Valley Union High
|
-105 |
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 |
21173 |
2509 |
- |
2628 |
= |
-119 |
* |
(1582 |
/ |
1582) |
= |
-119.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Centinela Valley Union High
|
-119 |
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 |
21154 |
2503 |
- |
2628 |
= |
-125 |
* |
(1574 |
/ |
1574) |
= |
-125.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Centinela Valley Union High
|
-125 |
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 |
21324 |
2504 |
- |
2628 |
= |
-124 |
* |
(1532 |
/ |
1532) |
= |
-124.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Centinela Valley Union High
|
-124 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-129
|
-105
|
-119
|
-125
|
-124
|
-602.0 |
-120.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -93.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -147.4
For the lines, you have the data necessary to plot the chart.