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 |
2807990 |
2553 |
- |
2628 |
= |
-75 |
* |
(132 |
/ |
132) |
= |
-75.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Siskiyou Union High
|
-75 |
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 |
85903 |
2565 |
- |
2628 |
= |
-63 |
* |
(146 |
/ |
146) |
= |
-63.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Siskiyou Union High
|
-63 |
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 |
88273 |
2565 |
- |
2628 |
= |
-63 |
* |
(137 |
/ |
137) |
= |
-63.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Siskiyou Union High
|
-63 |
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 |
88504 |
2532 |
- |
2628 |
= |
-96 |
* |
(141 |
/ |
141) |
= |
-96.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Siskiyou Union High
|
-96 |
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 |
89136 |
2543 |
- |
2628 |
= |
-85 |
* |
(98 |
/ |
98) |
= |
-85.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Siskiyou Union High
|
-85 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-75
|
-63
|
-63
|
-96
|
-85
|
-382.0 |
-76.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -34.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -118.4
For the lines, you have the data necessary to plot the chart.