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 |
161542 |
2548 |
- |
2628 |
= |
-80 |
* |
(168 |
/ |
168) |
= |
-80.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Bret Harte Union High
|
-80 |
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 |
4798 |
2581 |
- |
2628 |
= |
-47 |
* |
(172 |
/ |
172) |
= |
-47.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Bret Harte Union 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 |
4888 |
2582 |
- |
2628 |
= |
-46 |
* |
(150 |
/ |
150) |
= |
-46.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Bret Harte Union High
|
-46 |
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 |
4876 |
2575 |
- |
2628 |
= |
-53 |
* |
(162 |
/ |
162) |
= |
-53.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Bret Harte Union High
|
-53 |
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 |
4901 |
2580 |
- |
2628 |
= |
-48 |
* |
(158 |
/ |
158) |
= |
-48.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Bret Harte Union High
|
-48 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-80
|
-47
|
-46
|
-53
|
-48
|
-274.0 |
-54.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -12.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -96.8
For the lines, you have the data necessary to plot the chart.