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 |
1608037 |
2599 |
- |
2628 |
= |
-29 |
* |
(963 |
/ |
963) |
= |
-29.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Placer Union High
|
-29 |
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 |
50324 |
2617 |
- |
2628 |
= |
-11 |
* |
(1006 |
/ |
1006) |
= |
-11.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Placer Union High
|
-11 |
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 |
51758 |
2620 |
- |
2628 |
= |
-8 |
* |
(964 |
/ |
964) |
= |
-8.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Placer Union High
|
-8 |
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 |
51790 |
2608 |
- |
2628 |
= |
-20 |
* |
(942 |
/ |
942) |
= |
-20.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Placer Union High
|
-20 |
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 |
51979 |
2591 |
- |
2628 |
= |
-37 |
* |
(925 |
/ |
925) |
= |
-37.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Placer Union High
|
-37 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-29
|
-11
|
-8
|
-20
|
-37
|
-105.0 |
-21.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 15.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -57.0
For the lines, you have the data necessary to plot the chart.