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 |
1301262 |
2520 |
- |
2628 |
= |
-108 |
* |
(118 |
/ |
118) |
= |
-108.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Le Grand Union High
|
-108 |
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 |
40823 |
2557 |
- |
2628 |
= |
-71 |
* |
(111 |
/ |
111) |
= |
-71.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Le Grand Union High
|
-71 |
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 |
41825 |
2529 |
- |
2628 |
= |
-99 |
* |
(117 |
/ |
117) |
= |
-99.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Le Grand Union High
|
-99 |
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 |
41859 |
2544 |
- |
2628 |
= |
-84 |
* |
(98 |
/ |
98) |
= |
-84.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Le Grand Union High
|
-84 |
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 |
42002 |
2543 |
- |
2628 |
= |
-85 |
* |
(142 |
/ |
142) |
= |
-85.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Le Grand Union High
|
-85 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-108
|
-71
|
-99
|
-84
|
-85
|
-447.0 |
-89.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -47.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -131.4
For the lines, you have the data necessary to plot the chart.